Leviticus 22:23 Either a bullock or a lamb that has any thing superfluous or lacking in his parts, that may you offer for a freewill offering; but for a vow it shall not be accepted. Torrey's Topical Textbook
Malachi 1:14 But cursed be the deceiver, which has in his flock a male, and vows, and sacrifices to the LORD a corrupt thing: for I am a great King, said the LORD of hosts, and my name is dreadful among the heathen. Torrey's Topical Textbook