Leviticus 27:25-27

Complete Jewish Bible

²⁵ “‘All your valuations are to be according to the sanctuary shekel [two-fifths of an ounce], twenty gerahs to the shekel.

²⁶ “‘However, the firstborn among animals, since it is already born as a firstborn for Adonai, no one can consecrate — neither ox nor sheep — since it belongs to Adonai already. ²⁷ But if it is an unclean animal, he may redeem it at the price at which you value it and add one-fifth; or if he does not redeem it, it is to be sold at the price at which you value it.