You may present as a freewill offering an ox or sheep that has a deformed or stunted limb, but it is not acceptable in fulfillment of a vow.
KJV
Either a bullock or a lamb that hath any thing superfluous or lacking in his parts, that mayest thou offer [for] a freewill offering; but for a vow it shall not be accepted.
ASV
Either a bullock or a lamb that hath anything superfluous or lacking in his parts, that mayest thou offer for a freewill-offering; but for a vow it shall not be accepted.