Leviticus 27:25-27

Young's Literal Translation

²⁵ And all thy valuation is by the shekel of the sanctuary: twenty gerahs is the shekel.

²⁶ `Only, a firstling which is Jehovah's firstling among beasts -- no man doth sanctify it, whether ox or sheep; it [is] Jehovah's.

²⁷ And if among the unclean beasts, then he hath ransomed [it] at thy valuation, and he hath added its fifth to it; and if it is not redeemed, then it hath been sold at thy valuation.