(37) GOD said to Moses as follows: (38) Speak to the Israelite people and instruct them to make for themselves fringes on the corners of their garments throughout the ages; let them attach a cord of blue to the fringe at each corner. (39) That shall be your fringe; look at it and recall all GOD’s commandments and observe them, so that you do not follow your heart and eyes in your urge to stray. (40) Thus you shall be reminded to observe all My commandments and to be holy to your God. (41) I am the ETERNAL your God, who brought you out of the land of Egypt to be your God: I, your ETERNAL God.

(2)Rabbi Yehoshua ben Korḥa said: Why, in the mitzva of the recitation of Shema, did the portion of Shema precede that of VeHaya im Shamoa? This is so that one will first accept upon himself the yoke of the kingdom of Heaven, the awareness of God and God’s unity, and only then accept upon himself the yoke of the mitzvot, which appears in the paragraph of VeHaya im Shamoa. Why did VeHaya im Shamoa precede VaYomer? Because the paragraph of VeHaya im Shamoa is practiced both by day and by night, while VaYomer, which discusses the mitzva of ritual fringes, is only practiced during the day.

(1) After the priests completed laying the parts of the daily offering on the ramp, they went to the Chamber of Hewn Stone to recite Shema. The appointed priest who oversaw the lotteries in the Temple said to the priests: Recite a single blessing of the blessings that accompany Shema. And the members of the priestly watch recited a blessing, and then they recited the Ten Commandments, Shema (see Deuteronomy 6:4–9), VeHaya im Shamoa (see Deuteronomy 11:13–21), and VaYomer (see Numbers 15:37–41), the standard formula of Shema. Additionally, they blessed with the people three blessings. These blessings were: True and Firm [Emet Veyatziv], the blessing of redemption [Mi Chamocha] recited after Shema; and the blessing of the Temple service [Avodah], which is also a blessing recited in the Amida prayer; and the Priestly Benediction, recited in the form of a prayer, without the lifting of hands that usually accompanies that blessing (Tosafot). And on Shabbat, when the new priestly watch would begin its service, the priests would add one blessing recited by the outgoing priestly watch, that love, fraternity, peace, and friendship should exist among the priests of the incoming watch.

It is taught in a baraita that Rabbi Natan says: There is no mitzva, however minor, that is written in the Torah, for which there is no reward given in this world; and in the World-to-Come I do not know how much reward is given. Go and learn from the following incident concerning the mitzva of ritual fringes. There was an incident involving a certain man who was diligent about the mitzva of ritual fringes. This man heard that there was a prostitute in one of the cities overseas who took four hundred gold coins as her payment. He sent her four hundred gold coins and fixed a time to meet with her. When his time came, he came and sat at the entrance to her house. The maidservant of that prostitute entered and said to her: That man who sent you four hundred gold coins came and sat at the entrance. She said: Let him enter. He entered. She arranged seven beds for him, six of silver and one of gold. Between each and every one of them there was a ladder made of silver, and the top bed was the one that was made of gold. She went up and sat naked on the top bed, and he too went up in order to sit naked facing her. In the meantime, his four ritual fringes came and slapped him on his face. He dropped down and sat himself on the ground, and she also dropped down and sat on the ground. She said to him: I take an oath by the gappa of Rome that I will not allow you to go until you tell me what defect you saw in me. He said to her: I take an oath by the Temple service that I never saw a woman as beautiful as you. But there is one mitzva that the Lord, our God, commanded us, and its name is ritual fringes, and in the passage where it is commanded, it is written twice: “I am the Lord your God” (Numbers 15:41). The doubling of this phrase indicates: I am the one who will punish those who transgress My mitzvot, and I am the one who will reward those who fulfill them. Now, said the man, the four sets of ritual fringes appeared to me as if they were four witnesses who will testify against me. She said to him: I will not allow you to go until you tell me: What is your name, and what is the name of your city, and what is the name of your teacher, and what is the name of the study hall in which you studied Torah? He wrote the information and placed it in her hand. She arose and divided all of her property, giving one-third as a bribe to the government, one-third to the poor, and she took one-third with her in her possession, in addition to those beds of gold and silver. She came to the study hall of Rabbi Ḥiyya and said to him: My teacher, instruct your students concerning me and have them make me a convert. Rabbi Ḥiyya said to her: My daughter, perhaps you set your sights on one of the students and that is why you want to convert? She took the note the student had given her from her hand and gave it to Rabbi Ḥiyya. He said to her: Go take possession of your purchase. Those beds that she had arranged for him in a prohibited fashion, she now arranged for him in a permitted fashion. The Gemara completes its point about the reward of mitzvot and points out how this story illustrates the concept: This is the reward given to him in this world, and with regard to the World-to-Come, I do not know how much reward he will be given.

§ The verse states: “And the Lord passed by before him, and proclaimed” (Exodus 34:6). Rabbi Yoḥanan said: Were it not explicitly written in the verse, it would be impossible to say this, as it would be insulting to God’s honor. The verse teaches that the Holy One, Blessed be He, wrapped Himself in a prayer shawl like a prayer leader and showed Moses the structure of the order of the prayer. He said to him: Whenever the Jewish people sin, let them act before Me in accordance with this order. Let the prayer leader wrap himself in a prayer shawl and publicly recite the thirteen attributes of mercy, and I will forgive them.

§ Rav Yehuda would affix white and sky-blue strings to the garment [pirzuma] of his wife. And every morning he would recite the blessing: To wrap ourselves in garments with ritual fringes.The Gemara asks: From the fact that he would affix ritual fringes to his wife’s garments, it is apparent that he holds that the obligation of ritual fringes is a positive mitzva that is not time-bound, and therefore women are also obligated in it. But if that is his opinion, why did he recite the blessing on ritual fringes each and every morning? In order for the mitzva to not be time-bound, it must apply at night, in which case a new blessing should not be recited in the morning. The Gemara answers: Rav Yehuda was acting in accordance with the opinion of Rabbi Yehuda HaNasi, as it is taught in a baraita: With regard to phylacteries, every time one dons them he recites the blessing over them, even several times in one day; this is the statement of Rabbi Yehuda HaNasi. The Gemara asks: If so, he should have also recited a blessing every time that he took the cloak off and put it back on, and not merely once a day in the morning. The Gemara answers: Rav Yehuda was a modest man and he did not remove his cloak the entire day. The Gemara asks: In what way is it different from the morning, i.e., why did he recite a blessing in the morning? The Gemara answers: He recited the blessing in the morning when he changed from a nighttime garment to a daytime garment.§ The Sages taught in a baraita: Everyone is obligated in the mitzva of ritual fringes, including priests, Levites, Israelites, converts, women, and Canaanite slaves. Rabbi Shimon deems women exempt, because the mitzva of ritual fringes is a positive, time-bound mitzva, and women are exempt from every positive, time-bound mitzva.

(2) Women and slaves are exempt [from wearing tzitzit] because it is a time-dependent commandment. Rem"a: And if they wish to wrap [in tzitzit] and say the blessing on them it is up to them to do so as with all time-dependent commandments (Tosafot and the Rosh and the Ran, Chapter 2, Rosh Hashanah, First Chapter of Kiddushin). However, it looks as if they are doing it to appear more observant than others, therefore, they should not wear tzitzit, as it is not a commandment of the person [rather of the object] (Agur Section 27). [And for slaves] This means we do not have to buy him a tallit in order that he be required to wear tzitzit as we see in Chapter 19 it says when he has a shawl with four corners he should wear it.The requirement for a tumtum and an androgynous is doubtful and so they should wrap without a blessing (Explanation: a tumtum does not know whether he/she is male/female, and an androgynous has both male and female genitals).Rem"a: And since it is our custom that women should say the blessing when they fulfill time-dependent commandments so should they (Divrei Atzmo)

(14) You should take 4 threads on one side and 4 threads on the other side and tie them two times, making a double knot. Afterwards, you should use wrap the longest thread around the 7 others with a little wrapping and then make a double knot. Then repeat and wrap. This should be repeated until 5 double knots are made with the 4 spaces between them filled with windings. There is no שׁיעור (set measurement) for wrapping other than the fact that all the wrapping and the knots must be 4 thumb widths wide and the branch (protruding threads) 8 thumb widths. [If the Tzitzit are longer, one should make sure that one the tassels should be (at the minimum) one third of the length and the branch should be two thirds of the length.] It is the custom to have 7 wrappings in the first space, 9 in the second space, 11 in the third, and 13 in the fourth. They all add up to 40 corresponding to the numerical value of “השׁם אחד” (G-d is one) which is actually 39 and by adding G-d (since G-d is one, you add one), it makes 40. It is customary to tie a knot at the end of every thread so that they should remain intertwined.

(4) Praised are You, Lord our God, Ruler of the Universe, Who sanctified us with Divine commandments and commanded us to enwrap ourselves with tzitzit.

[Each] zizith is inserted [in a hole] within three finger-[breadths] of [each] corner; farther away than this is invalid If it was inserted in the border, it is invalid; if between a handbreadth [from the edge] and the border, it is valid. R. Eliezer b. Jacob declares it to be invalid. [If a strip less than three finger-breadths in length] was cut off [from a ṭallith] and then rejoined to it, [the ṭallith] is valid. R. Meir declares it to be invalid. [If the detached part] was made into [a smaller ṭallith] on its own, it is valid.

Should a man dye [the zizith of] a ṭallith for himself, they are invalid for religious use if he intended to test [the dye]. If he dyed them [with an ordinary dye], even four or five times, they are invalid, since the blue [of the zizith] must be dyed only with that of ḥillazon. What does the ḥillazon resemble? In its formation it resembles a fish and [the colour of] its body resembles [the blueness of] the sky. Its appearance is a very rare occurrence and consequently it is very costly.

(8) A person is permitted to wear tzitzit at night, both during the weekdays and on the Sabbath, even though this is not the time when the mitzvah should be fulfilled, provided he does not recite a blessing.
When should the blessing over tzitzit be recited in the morning? When [the sun has risen so] that one can differentiate between the strands of techelet and those which are white.
Which blessing should be recited upon it? "Praised are You, God, our Lord, Ruler of the universe, who has sanctified us with Divine commandments and commanded us to wrap ourselves with tzitzit." Whenever a person wraps himself in tzitzit during the day, he should recite the blessing before doing so.
No blessing should be recited on the tzitzit when making them, because the ultimate purpose of the mitzvah is that one should wrap oneself in [a tallit].

(5) Some say that it's necessary that the colour of the tzitzit and tallit are the same, and those who are particular are accustomed to practice this way. REMA: and Ashkenazim are accustomed to make only white tzitzit, even for coloured garments, and there is no need to change [the custom]

(4) It is permissible to take his friend's טלית and to recite the blessing on it, as long as he folds it [when he is finished] if he found it folded. Rem"a: And the same law apply's regarding תפילין (Nemukei Yoseph in Perek Ha'sfina (Bava Batra Chapter 5)). But it is forbidden to learn from holy books of his friend without his knowledge, for we are concerned that he will tear them (ie. the pages in the book) while he is learning [from them] (Nimukei Yosef - Halachot Ketanot)