Musannaf Ibn Abi Shayba 18:441

Abu Bakr narrated to us, he said: Muhammad ibn Bakr narrated to us, from Ibn Jurayj, from ‘Amr ibn Shu‘ayb, he said: Abu Bakr judged regarding the spine of a man if it is broken then set, with the full blood money if it does not carry him. And with half the blood money if it carries him.