Musannaf Ibn Abi Shayba 7:89

Abu Bakr narrated to us, he said: Hushaym narrated to us, from Mughira, from Ibrahim, that he used to say regarding one who owed a neck [to be freed]: If he purchased a soul, he said: If he removes it from work to work, it suffices him. It does not suffice him [if it is] one who does not work. As for the one who works, it is the one-eyed and his like. As for the one who does not work, it is the crippled and the blind.