He (PBUH) taught them the rulings of Islam and ordered them to stay away from their former bad customs

Under category: How He treated them?

Abu Maalik Al-Ashja’i (a Follower; belonging to the generation succeeding the Companions) reported that his father said

“If a man became Muslim, the Prophet of Allah, sallallaahu ‘alayhi wa sallam, would teach him the prayer, then he would order him to supplicate with these four words: O Allah forgive me, have mercy upon me, guide me, protect me from harm, and provide for me.

Reported by Muslim (2697)