Leviticus 27:31 in the King James Version
And if a man will at all redeem ought of his tithes, he shall add thereto the fifth part thereof.
Context
30 “‘All the tithe of the land, whether of the seed of the land or of the fruit of the trees, is the LORD’s. It is holy to the LORD.
31 If a man redeems anything of his tithe, he shall add a fifth part to it.
32 All the tithe of the herds or the flocks, whatever passes under the rod, the tenth shall be holy to the LORD.