(2) God spoke to Moses and said to him, “I am יהוה. (3) I appeared to Abraham, Isaac, and Jacob as El Shaddai, but I did not make Myself known to them by My name יהוה. (4) I also established My covenant with them, to give them the land of Canaan, the land in which they lived as sojourners. (5) I have now heard the moaning of the Israelites because the Egyptians are holding them in bondage, and I have remembered My covenant. (6) Say, therefore, to the Israelite people: I am יהוה. I will free you from the labors of the Egyptians and deliver you from their bondage. I will redeem you with an outstretched arm and through extraordinary chastisements. (7)And I will take you to be My people, and I will be your God. And you shall know that I, יהוה, am your God who freed you from the labors of the Egyptians. (8)I will bring you into the land which I swore to give to Abraham, Isaac, and Jacob, and I will give it to you for a possession, I יהוה.”

The Sages taught in a baraita: With regard to the fourth (fifth) cup, one completes hallel over it and recites the great hallel; this is the statement of Rabbi Tarfon.

On the fifth cup [of wine] one recites the great Hallel. This is the opinion of Rabbi Tarfon....

(10) And afterwards, he recites the Grace after the Meals over a third cup and drinks it. And afterwards, he mixes (pours) a fourth cup and finishes the Hallel (a set order of praises from the Psalms) over it. And he recites the blessing of song and that is "May all of your creatures praise you, etc." And he recites the blessing, "Who creates the fruit of the vine," and does not taste anything afterwards the whole night, except for water. And he should mix (pour) a fifth cup and say upon it the Great Hallel (Psalms 136), from "Give thanks to the Lord, for God is good" (Psalms 136:1) to "Upon the waters of Babylon" (Psalms 137:1). And this cup is not obligatory like the [other] four cups. And he can finish the Hallel anyplace that he desires, even though he is not in the place of the meal.

(4) They pour a second cup [of wine] for him. And here the son questions his father. And if the son has insufficient understanding [to question], his father teaches him [to ask]: Why is this night different from all [other] nights? On all [other] nights, we eat leavened and unleavened bread, [but] on this night, [we eat] only unleavened bread. On all [other] nights, we eat all kinds of vegetables, [but] on this night, [we eat only] bitter herbs. On all [other] nights, we eat meat roasted, stewed or boiled, [but] on this night, [we eat] only roasted [meat]. On all [other] nights, we dip [vegetables] once, [but] on this night, we dip [vegetables] twice. And according to the son's intelligence, his father instructs him. He begins [answering the questions] with [the account of Israel’s] shame and concludes with [Israel’s] glory, and expounds from “My father was a wandering Aramean” until he completes the whole passage.

It happened once [on Pesach] that Rabbi Eliezer, Rabbi Yehoshua, Rabbi Elazar ben Azariah, Rabbi Akiva and Rabbi Tarfon were reclining in Bnei Brak and were telling the story of the exodus from Egypt that whole night, until their students came and said to them, "The time of [reciting] the morning Shema has arrived."

Our rabbis learned, "We say the Great Hallel (Psalm 136, and see below at the bottom of the paragraph for other opinions) over a fifth cup - these are the words of Rabbi Tarfon, and there are those that say, 'The Lord is my shepherd, I shall not lack' (Psalms 23)." And Rashbam [follows] the textual variant, "We say the Great Hallel on the fourth cup," as 'who mentioned the name' of the fifth cup; and if it is coming to say [that the fifth cup is optional and, if wants, he should do a fifth cup, this is how it should have said it: "One who wants to do a fifth cup should say the Great Hallel upon it." But according to the textual variant of the books, it is implied that for Rabbi Tarfon and the 'those that say,' the fifth cup is obligatory, but the world has become accustomed to make it optional. And so did Rabbi Yosef Tov Eelem, may his memory be blessed, write - that if desires to drink, he should make a fifth cup. It is implied from his words that it is [otherwise] forbidden to drink after the four cups. And it is a wonder, as from where do we have this; as later it only says, "We may not eat an afikoman (a dessert or other foods eaten after the meal) after [we are finished eating] the Pesach sacrifice" - which means not to eat, but to drink is permitted. And so also since in the [Talmud] Yerushalmi, it explains that he should not drink between the third and fourth [cups] because of 'lest he get drunk,' it is implied that if we were not concerned about drunkenness, it would be permissible to drink. But the custom that has spread is not to drink wine. And Ram, may his memory be blessed, explained a reason for this custom: that it is because a person is obligated to be involved the whole night with the laws of Pesach and with the exodus from Egypt, to recount the miracles and wonders that the Holy One, blessed be He, did for us, until slumber overcomes him - and if he drinks, he will get drunk [and not be able to do this]. And so too do we say in Tosefta Pesachim 10:11, "A person is obligated to be involved with the laws of Pesach and with the exodus from Egypt the whole night"; and this is what we learned (Pesach Haggadah, Magid, Story of the Five Rabbis 1), "It happened once [on Pesach] that Rabbi Eliezer, Rabbi Yehoshua [...] were reclining in Bnei Brak and were telling the story of the exodus from Egypt that whole night, etc." But with the fourth cup, they permitted [drinking], as it has scriptural support, corresponding to the verse (Exodus 6:7), "and I will take you." From where is the Great Hallel? Rav Yehuda said from "Praised" (Psalms 136:1) to "On the rivers of Babylon" (Psalms 137:1). Rabbi Yochanan said from "A song of ascents" to "On the rivers of Babylon." Rab Achaa bar Yaakov says from "Since the Lord has chosen Yaakov" (Psalms 135:4) to "On the rivers of Babylon." But the custom of the world is like Rav Yehuda concerning the Great Hallel.

(10) And afterwards, he [washes] his hands and recites the Grace over the Meal over a third cup and drinks it. And afterwards, he pours a fourth cup and finishes the Hallel over it. And he recites the blessing over the song, and that is "May all of your creatures praise you, etc." And he recites the blessing, "who creates the fruit of the vine," [drinks it] and does not taste anything afterwards the whole night except for water. And he should pour a fifth cup and say the Great Hallel (Psalms 136) upon it, from "Give thanks to the Lord, for He is good" (Psalms 136:1) to "Upon the rivers of Babylon" (Psalms 137:1). And this cup is not obligatory like the [other] four cups. And he can finish the Hallel in any place that he desires, even though he is not in the place of the meal.