Exodus 12:5
Your lamb shall be without blemish, a male of the first year: you shall take it out from the sheep, or from the goats:
Torrey's Topical Textbook—AKJV

Numbers 6:14
And he shall offer his offering to the LORD, one he lamb of the first year without blemish for a burnt offering, and one ewe lamb of the first year without blemish for a sin offering, and one ram without blemish for peace offerings,
Torrey's Topical Textbook—AKJV