Hesabu 18 : 15 Numbers chapter 18 verse 15

Kila kifunguacho tumbo, cha wenye mwili wote watakachomsongezea Bwana cha wanadamu na cha wanyama, ni chako; lakini mzaliwa wa kwanza wa binadamu, huna budi utamkomboa, na mzaliwa wa kwanza wa wanyama wasio safi utamkomboa.
soma Mlango wa 18

Everything that opens the womb, of all flesh which they offer to Yahweh, both of man and animal shall be yours: nevertheless the firstborn of man shall you surely redeem, and the firstborn of unclean animals shall you redeem.