Leviticus 1:3 New King James Version (NKJV)
3 ‘If his offering is a burnt sacrifice of the herd, let him offer a male without blemish; he shall offer it of his own free will at the door of the tabernacle of meeting before the Lord.
Leviticus 22:20-24 New King James Version (NKJV)
20 Whatever has a defect, you shall not offer, for it shall not be acceptable on your behalf. 21 And whoever offers a sacrifice of a peace offering to the Lord, to fulfill his vow, or a freewill offering from the cattle or the sheep, it must be perfect to be accepted; there shall be no defect in it. 22 Those that are blind or broken or maimed, or have an [a]ulcer or eczema or scabs, you shall not offer to the Lord, nor make an offering by fire of them on the altar to the Lord. 23 Either a bull or a lamb that has any limb too long or too short you may offer as a freewill offering, but for a vow it shall not be accepted.
24 ‘You shall not offer to the Lord what is bruised or crushed, or torn or cut; nor shall you make any offering of them in your land.