Drinking on Purim

Rava said: A person is obligated to become intoxicated with wine on Purim until he is so intoxicated that he does not know how to distinguish between cursed is Haman and blessed is Mordecai. The Gemara relates that Rabba and Rabbi Zeira prepared a Purim feast with each other, and they became intoxicated to the point that Rabba arose and slaughtered Rabbi Zeira. The next day, when he became sober and realized what he had done, Rabba asked God for mercy, and revived him. The next year, Rabba said to Rabbi Zeira: Let the Master come and let us prepare the Purim feast with each other. He said to him: Miracles do not happen each and every hour, and I do not want to undergo that experience again.

(15) What is the nature of our obligation for this feast? A person should eat meat and prepare as attractive a feast as his means permit. He should drink wine until he becomes intoxicated and falls asleep in his intoxication. And similarly a a person is obligated to send two portions of meat or two types of cooked food or two types of food to his friend, as it says (Esther 9:22) "and send portions one man to another" two portions to one man. And all that increase to send to others is praiseworthy. And if he has no [money] he should exchange with his friend: this one sends to this his meal and this one sends to this his meal in order to fulfill (Esther 9:22) "and send portions one man to another".

(2) One is obligated to be intoxicated on Purim to the point where he does not know [the difference] between "accursed is Haman" and "blessed is Mordechai". Rama: Some say it is not necessary to become drunk so much, but rather to drink more than he is used to (Kol Bo), and to fall asleep, and while he sleeps he does not know [the difference] between "accursed is Haman" and "blessed is Mordechai" (Maharil). [There is no difference] between one who has more and one who has less, as long as his heart is directed to heaven. One should not fast on Purim, except for a fast for a [bad] dream, and see earlier Siman 568 and Siman 570. There are those who have the custom to dress in Shabbat/Yom Tov clothes on Purim, and that is correct (Maharil). We have the custom to make the Purim meal after the afternoon prayer, and pray the evening prayer at night. We pray the afternoon prayer while most of the day remains, and most of the meal needs to be during the day (Minhagim). And it should not be like those who have the custom to start close to evening, and most of the meal happens during the night of the 15th. When Purim falls out on Friday, they should have the meal in the morning because of honor for the Sabbath (Minhagim). And one who wants to [have his meal] every [Purim] in the morning is allowed to (T"H). Some say that there is [significance] to eating seeds on Purim as a remembrence for the seeds that Daniel and his friends ate in Babylonia (Kol Bo). It is good to delve a bit in Torah before one begins the meal, and a support for that is (Esther 8:16) "The Jews had light and happiness...", which we learn out "radiance" - that's Torah (Mahariv). One is obligated to drink a little and be a little happy on two days, the 14th and the 15th (Minhagim), and so is the custom. And some say that if one causes damage to his fellow through his happiness on Purim, he is exempt from restitution (Terumat HaDeshen, Part I 110). And see Terumat HaDeshen Laws of Damage.

(1) One who does the Purim meal at night does not fulfill his obligation. Rama: Nevertheless, one should be happy and add more during his meal even at night (Teshuvat Mahariv).