Milk & Honey on Shavu'ot

Concerning that which the verse says, "Your ointments have a good fragrance", the Rabbis said that the Torah is compared with five things: Water, wine, honey, milk and oil...Where do we see it compared to honey and milk? "Honey and milk under your tongue" [i.e. this alludes to Torah].

(2) Another interpretation: HONEY AND MILK ARE UNDER YOUR TONGUE. When they stood before Mount Sinai (according to Exod. 24:7), THEY SAID: ALL THAT THE LORD HAS SPOKEN WE WILL CARRY OUT AND OBEY. In that hour the Holy One said to them: HONEY AND MILK ARE UNDER YOUR TONGUE. Another interpretation (of Cant. 4:11): NECTAR. The Holy One said to them: Thus (i.e., like nectar) you have cherished the Torah. By your life, it is given to you as a gift.²⁹Cf. below, 9:12; Ned. 38a. (Exod. 31:18:) HE THEN GAVE UNTO MOSES.

(3) It is prohibited to fast immediately after the holiday of Shavuot. Ramah: And we do not say Tachanun from the beginning of Rosh Chodesh Sivan until the 8th day, which is after the post-holiday day (Hagahot Maimoni, Hil' Tefillah Umnagim). We have the custom to spread out plants on Shavuot in the synagogue and in houses, as a memory for the happiness of the receiving of the Torah. We have a custom everywhere to eat dairy food on the first day of Shavuot. And it seems to me that the reason is: It is like the two foods that are taken on the evening of Pesach, a reminder of the Korban Pesach and a reminder of the Korban Chagiga, so too we eat a dairy food followed by a meat food, and we bring with them two loaves on the table in place of the Mizbeach, and thus there will be a reminder of the two loaves that were brought on "The day of the Bikkurim."

(12) Dairy foods - See Magen Avraham and I also heard in the name of a Gadol who said a correct reason for this: that when Bnei Yisrael stood at Har Sinai and accepted the Torah (When the 10 commandments were revealed, and through this all the parts of the Torah were also revealed to them, like that Rav Sadya Gaon writes, that the 10 commandments sustain the whole torah) and they went down from the mountain to their homes they found nothing to eat immediately except for dairy foods because for meat they would need much preparation to slaughter with a checked knife like Hashem commanded... And to clean out the strings of forbidden fats and blood, and to rinse and salt(the meat). Also to cook in new vessels because their previous vessels had been used to cook meat (that they now discovered was actually trief) had been used in the last 24 hrs (which is what is forbidden Biblically) so their old vessels were forbidden to them, therefore they choose on account of the time to eat dairy foods and we do this as a commemoration of this.