"Anyone who cannot afford a lamb is to bring two doves or two young pigeons to the LORD as a penalty for their sin – one for a sin offering and the other for a burnt offering." (NIV)
But if he cannot afford a lamb, then he shall bring for his guilt offering to the Lord two turtledoves or two young pigeons, one for a sin offering and the other for a burnt offering. (AMP)
And if he be not able to bring a lamb, then he shall bring for his trespass, which he hath committed, two turtledoves, or two young pigeons, unto the LORD; one for a sin offering, and the other for a burnt offering. (KJV)