Sayyiduna Abu Umamah (may Allah be pleased with him) narrates: A man said: "O Messenger of Allah! What is sin?" The Prophet (peace and blessings be upon him) said: "Whatever pricks in your chest, leave it." He asked: "What is faith?" The Prophet (peace and blessings be upon him) said: "Whoever is saddened by his bad deed and pleased by his good deed is a believer."
Al-Tabarani recorded it, and Ahmad recorded it from that Companion in abridged form; the narrators of al-Tabarani are the narrators of the Sahih.
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب الزهد / 18118
Hadith Gradingمحدثین:إسنادہ صحیح
Hadith Takhrij«اخرجه الطبراني فى المعجم الكبير (8641) اخرجه احمد في (8641) اخرجه احمد فى المسند (251/5) ، أخرجه المعجم الكبير للطبراني برقم: 7539»