Shavuot

1. For it was taught in a baraita that these two tanna’im disagreed about this matter: Rabbi Eliezer says: A person has nothing but to choose on a Festival; he either eats and drinks or sits and learns the entire day, but there is no specific mitzva to eat on the Festival.
2. Rabbi Yehoshua, on the other hand, says: Divide the day, half of it for eating and drinking and half of it for the study hall, for he holds that eating and drinking are obligatory on the Festival.
3. And Rabbi Yoḥanan said: And both of them derived their opinions from one verse, i.e., the two of them addressed the same textual difficulty, resolving it in different ways. For one verse says: “It shall be an assembly for the Lord your God; you shall do no labor” (Deuteronomy 16:8), which indicates that the day is set aside for Divine service, and another verse says: “It shall be an assembly for you; you shall do no servile labor” (Numbers 29:35), which indicates a celebratory assembly for the Jewish people.
4. Rabbi Eliezer holds that the two verses should be understood as offering a choice: The day is to be either entirely for God or entirely for you. And Rabbi Yehoshua holds that it is possible to fulfill both verses: Split the day into two, half of it for God and half of it for you. Ayin, beit, mem is a mnemonic consisting of the first letter of Atzeret, the middle letter of Shabbat and the final letter of Purim.
5. Rabbi Elazar said: All agree with regard to Atzeret, the holiday of Shavuot, that we require that it be also “for you,” meaning that it is a mitzva to eat, drink, and rejoice on that day. [Refer to Rashi on this]
6. What is the reason? It is the day on which the Torah was given, and one must celebrate the fact that the Torah was given to the Jewish people.

That we also require "for you" – that he should rejoice on it with food and drink, to demonstrate that this day on which the Torah was given to Israel is pleasant and acceptable [to us].