A certain matron¹⁶ said to R. Judah, 'A teacher and drunkard!'¹⁷ He replied, You may well believe me that¹⁸ I taste [no wine] but that of Kiddush and Habdalah¹⁹ and the four cups of Passover,²⁰ on account of which I have to bind my temples from Passover until Pentecost;²¹ but a man's wisdom maketh his face shine.²²...

Those who are sick and their attendants [are exempt from the mitzvah of the sukkah] One who is sick but not one who is merely in discomfort? I will explain: A sick person and his attendants are exempt, whereas he who is in discomfort is exempt, but not his attendants.

1. Bava Kamma 9a-9b - R. Zera said on behalf of R. Huna: For [the performance of] a commandment one should go up to a third. A third of what? You could hardly suggest 'a third of one's possessions,' for if so when one chanced to have three commandments [to perform at one and the same time] would one have to give up the whole of one's possessions? — R. Zera therefore said: For [performing a commandment in] an exemplary manner one should go up to a third of [the ordinary expense involved in] the observance thereof.

Mishnah: Messengers to do a mitzvah are exempt from sukkah. The sick and their attendants are exempt from sukkah. Non-established [meals] are eaten and drunk outside of the sukkah. Gemara: From where are these words? As our rabbis taught: (Deuteronomy 6:7) "in your sitting in your house" exempts one involved in a mitzvah.

If you drank the four glasses of wine without diluting them, you have fulfilled your obligation. Rava says You have fulfilled your obligation of drinking four glasses of wine on Pesach, however, you have not fulfilled your obligation of making yourself free as a slave. If you drink the four glasses of wine one after the other without pausing in between to mention the required parts of the Haggadah, then Rav says You have fulfilled your obligation of drinking wine, but you have not fulfilled your obligation to drink the four glasses of wine on Pesach night, If a person poured from his cup to his children and did not drink a full cup, he has still fulfilled his obligation. Rav Nachman, the son of Itzchak says He only fulfils his obligation if he drank the majority of the glass of wine.