Sahih Muslim Book 39, Hadith Number 6716.

Chapter : The question of a Jew from Allah’s Messenger (may peace be upon him) about soul and his words: “They ask thee about the soul”.

This hadith has been narrated on the authority of Khabbib through another chain of transmitters and the words are. I in the pre-Islamic days used to work as an iron-smith. I did some work for ‘As b. Wa’il and came to him for getting the remuneration of my wages.