Leviticus 27:27 YLT

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.

²⁸  'Only, no devoted thing which a man devoteth to Jehovah, of all that he hath, of man, and beast, and of the field of his possession, is sold or redeemed; every devoted thing is most holy to Jehovah.

²⁹  'No devoted thing, which is devoted of man, is ransomed, it is surely put to death.