Leviticus 27:10
10 qHe shall not exchange it or make a substitute for it, good for bad, or bad for good; and if he does in fact substitute one animal for another, then both it and the substitute shall be holy.
Leviticus 27:28
28 “But gno devoted thing that a man devotes to the Lord, of anything that he has, whether man or beast, or of his inherited field, shall be sold or redeemed; every devoted thing is most holy to the Lord.
Leviticus 27:33
33 One shall not differentiate between good or bad, kneither shall he make a substitute for it; and if he does substitute for it, then both it and the substitute shall be holy; it shall not be redeemed.”