Numbers 28:18

15 And one he-goat for a sin-offering to the Lord; it is to be offered in addition to the regular burned offering and its drink offering.

16 And in the first month, on the fourteenth day of the month, is the Lord's Passover.

17 On the fifteenth day of this month there is to be a feast; for seven days let your food be unleavened cakes.

18 On the first day there is to be a holy meeting: you may do no sort of field-work:

19 And you are to give an offering made by fire, a burned offering to the Lord; two oxen, one male sheep, and seven he-lambs of the first year, without any mark:

20 And their meal offering, the best meal mixed with oil: let three tenth parts of an ephah be offered for an ox and two tenth parts for a male sheep;

21 And a separate tenth part for every one of the seven lambs;