Nawwas bin Sam'an (may Allah be pleased with him) reports: I asked the Messenger of Allah (peace and blessings be upon him and his family) about virtue and sin. He (peace be upon him) said: "Virtue is good character, while sin is that which troubles your heart and you dislike that people should come to know of it." Narrated by Muslim.
Hadith Referenceمشكوة المصابيح / كتاب الآداب / 5073
Hadith Gradingالألبانی:صَحِيح | زبیر علی زئی:صحيح
Hadith Takhrij´تحقيق و تخريج: محدث العصر حافظ زبير على زئي رحمه الله` «رواه مسلم (2553/14)»