Leviticus 5:7-8

⁷And if his means suffice not for a lamb, then he shall bring his trespass-offering for that wherein he hath sinned, two turtle-doves, or two young pigeons, unto Jehovah; one for a sin-offering, and the other for a burnt-offering.

⁸And he shall bring them unto the priest, who shall offer that which is for the sin-offering first, and wring off its head from its neck, but shall not divide it asunder: