English translation
[6517] 15 - (...) It was narrated that An-Nawwâs bin Sam'ân said: "I stayed with the Messenger of Allâh ﷺ in Al-Madînah for one year, and nothing kept me from parting from him except asking questions. If one of us left him he would not ask the Messenger of Allâh ﷺ about anything.[1] But I asked him about righteousness and sin, and the Messenger of Allâh ﷺ said: 'Al-Birr (righteousness) is good conduct, and sin is that which wavers in your heart and you do not want the people to find out about it.'"
