Arabic (Original)
حَدَّثَنَا إِبْرَاهِيمُ بْنُ خَالِدٍ حَدَّثَنَا رَبَاحٌ عَنْ مَعْمَرٍ عَنْ يَحْيَى بْنِ أَبِي كَثِيرٍ عَنْ زَيْدِ بْنِ سَلَّامٍ عَنْ جَدِّهِ قَالَ سَمِعْتُ أَبَا أُمَامَةَ يَقُولُ سَأَلَ رَجُلٌ النَّبِيَّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ فَقَالَ مَا الْإِثْمُ فَقَالَ إِذَا حَكَّ فِي نَفْسِكَ شَيْءٌ فَدَعْهُ قَالَ فَمَا الْإِيمَانُ قَالَ إِذَا سَاءَتْكَ سَيِّئَتُكَ وَسَرَّتْكَ حَسَنَتُكَ فَأَنْتَ مُؤْمِنٌ.
English Translation
Ibrahim ibn Khalid told us: Rabah told us, from Ma'mar, from Yahya ibn Abi Kathir, from Zayd ibn Sallam, from his grandfather, who said: I heard Abu Umamah say: A man asked the Prophet, peace and blessings be upon him, saying: What is sin? He said: When something wavers in your soul, leave it. He said: What is faith? He said: When your bad deed grieves you and your good deed pleases you, then you are a believer.