Numbers 28:18

15 One male goat for a sin-offering to Yahweh; it shall be offered besides the continual burnt offering, and the drink-offering of it.

16 In the first month, on the fourteenth day of the month, is Yahweh`s Passover.

17 On the fifteenth day of this month shall be a feast: seven days shall unleavened bread be eaten.

18 In the first day shall be a holy convocation: you shall do no servile work;

19 but you shall offer an offering made by fire, a burnt offering to Yahweh: two young bulls, and one ram, and seven he-lambs a year old; they shall be to you without blemish;

20 and their meal-offering, fine flour mingled with oil: three tenth parts shall you offer for a bull, and two tenth parts for the ram;

21 a tenth part shall you offer for every lamb of the seven lambs;