Exodus 12:5

תמים PERFECT i. e. without blemish (Mekhilta). בן שנה OF THE FIRST YEAR — the whole of its first year it is termed שנה בן, as much as to say, that it was born during this year (it does not mean that it is one year old — in its second year) (cf.Mekhilta). מן הכבשים ומן העזים — i. e. either from these (a lamb) or from these (a goat) (i. e. the ו of ומן does not signify “and”, but “or”); for a goat, also, is called שה, as it is said, (Deuteronomy 14:4) “the שה of the goats” (שה means the young animal, either of the sheep or of the goats) (cf. Mekhilta).

Your lamb shall be without blemish, a male of the first year: you shall take it from the sheep, or from the goats:

שֶׂ֥ה תָמִ֛ים זָכָ֥ר בֶּן־שָׁנָ֖ה יִהְיֶ֣ה לָכֶ֑ם מִן־הַכְּבָשִׂ֥ים וּמִן־הָעִזִּ֖ים תִּקָּֽחוּ׃