Deuteronomy 15:21
And if there be any blemish therein, as if it be lame, or blind, or have any ill blemish, thou shalt not sacrifice it unto the LORD thy God.
Deuteronomy 17:1
Thou shalt not sacrifice unto the LORD thy God any bullock, or sheep, wherein is blemish, or any evilfavouredness: for that is an abomination unto the LORD thy God.