Leviticus 27:32-34

New Revised Standard Version Catholic Edition

³² All tithes of herd and flock, every tenth one that passes under the shepherd’s staff, shall be holy to the Lord. ³³ Let no one inquire whether it is good or bad, or make substitution for it; if one makes substitution for it, then both it and the substitute shall be holy and cannot be redeemed.

³⁴ These are the commandments that the Lord gave to Moses for the people of Israel on Mount Sinai.