Leviticus 23:33-36 - The Feast Of Booths
33 Then Yahweh spoke to Moses, saying, 34 "Speak to the {Israelites}, saying, 'On the fifteenth day of the seventh month, this [shall be] the Feast of Booths [for] seven days for Yahweh. 35 On the first day [there shall be] a holy assembly; you must not do any {regular work}. 36 [For] seven days you must present an offering made by fire to Yahweh. On the eighth day it shall be a holy assembly for you, and you shall present an offering made by fire to Yahweh; it [is] a celebration; you must not do {any regular work}.