Leviticus 27:32-33

Leviticus 27:32-33 HCSB

Every tenth animal from the herd or flock, which passes under the shepherd’s rod, will be holy to the LORD. He is not to inspect whether it is good or bad, and he is not to make a substitution for it. But if he does make a substitution, both the animal and its substitute will be holy; they cannot be redeemed.”
HCSB: Holman Christian Standard Bible