Numbers 7:59

7:59 and for the sacrifice of peace offerings: two bulls, five rams, five male goats, and five lambs in their first year. This was the offering of Gamaliel son of Pedahzur.

Numbers 18:15

18:15 The firstborn of every womb which they present to the Lord, whether human or animal, will be yours. Nevertheless, the firstborn sons you must redeem, and the firstborn males of unclean animals you must redeem.