Leviticus 27:34 YLT

³²  'And all the tithe of the herd and of the flock -- all that passeth by under the rod -- the tenth is holy to Jehovah;

³³  he enquireth not between good and bad, nor doth he change it; and if he really change it -- then it hath been -- it and its exchange is holy; it is not redeemed.'

³⁴  These 'are' the commands which Jehovah hath commanded Moses for the sons of Israel, in mount Sinai.