Leviticus 23:33-37

33Adonai spoke to Moses saying:

34“Speak to Bnei-Yisrael, and say, On the fifteenth day of this seventh month is the Feast of Sukkot, for seven days to Adonai.

35On the first day there is to be a holy convocation—you are to do no laborious work.

36For seven days you are to bring an offering by fire to Adonai. The eighth day will be a holy convocation to you, and you are to bring an offering by fire to Adonai. It is a solemn assembly—you shall do no laborious work.

37“These are the moadim of Adonai, which you are to proclaim to be holy convocations, to present an offering by fire to Adonai—a burnt offering, a grain offering, a sacrifice and drink offerings, each on its own day,