1191 - Abu Bakr informed us, he said: Abu 'Abd Allah narrated to us, he said: Aswad ibn 'Amir narrated to us, he said: Abu Bakr narrated to us, from al-Hasan ibn 'Amr, from Muhammad ibn 'Abd al-Rahman ibn Yazid, from his father, from 'Abd Allah [ibn Mas'ud], who said: The Messenger of Allah (may Allah bless him and grant him peace) said: "Indeed, the believer is not one who habitually insults, nor one who frequently curses, nor is he vulgar or foul-mouthed."
