Leviticus 27:8

5 If it be from five years old even to twenty years old, then your estimation shall be of the male twenty shekels, and for the female ten shekels.

6 If it be from a month old even to five years old, then your estimation shall be of the male five shekels of silver, and for the female your estimation shall be three shekels of silver.

7 If it be from sixty years old and upward; if it be a male, then your estimation shall be fifteen shekels, and for the female ten shekels.

8 But if he be poorer than your estimation, then he shall be set before the priest, and the priest shall value him; according to the ability of him who vowed shall the priest value him.

9 If it be a animal, whereof men offer an offering to Yahweh, all that any man gives of such to Yahweh shall be holy.

10 He shall not alter it, nor change it, a good for a bad, or a bad for a good: and if he shall at all change animal for animal, then both it and that for which it is changed shall be holy.

11 If it be any unclean animal, of which they do not offer an offering to Yahweh, then he shall set the animal before the priest;