حَدَّثَنِي مُحَمَّدُ بْنُ حَاتِمِ بْنِ مَيْمُونٍ، حَدَّثَنَا ابْنُ مَهْدِيٍّ، عَنْ مُعَاوِيَةَ بْنِ صَالِحٍ، عَنْ عَبْدِ الرَّحْمَنِ بْنِ جُبَيْرِ بْنِ نُفَيْرٍ، عَنْ أَبِيهِ، عَنِ النَّوَّاسِ بْنِ سَمْعَانَ الأَنْصَارِيِّ، قَالَ سَأَلْتُ رَسُولَ اللَّهِ صلى الله عليه وسلم عَنِ الْبِرِّ وَالإِثْمِ فَقَالَ ‏"‏ الْبِرُّ حُسْنُ الْخُلُقِ وَالإِثْمُ مَا حَاكَ فِي صَدْرِكَ وَكَرِهْتَ أَنْ يَطَّلِعَ عَلَيْهِ النَّاسُ ‏"‏ ‏.‏

Nawwas b. Sam'an reported

I stayed with Allah's Messenger (ﷺ) for one year. What obstructed me to migrate was (nothing) but (persistent) inquiries from him (about Islam). (It was a common observation) that when anyone of us migrated (to Medina) he ceased to ask (too many questions) from Allah's Messenger (ﷺ). So I asked him about virtue and vice. Thereupon Allah's Messenger (ﷺ) said: Virtue is a kind disposition and vice is what rankles in your mind and that you disapprove of its being known to the people.