Sahih Muslim Book - 49, Hadith - 6963

حَدَّثَنَا قُتَيْبَةُ بْنُ سَعِيدٍ حَدَّثَنَا لَيْثٌ عَنْ مُحَمَّدِ بْنِ قَيْسٍ - قَاصِّ عُمَرَ بْنِ عَبْدِ الْعَزِيزِ - عَنْ أَبِى صِرْمَةَ عَنْ أَبِى أَيُّوبَ أَنَّهُ قَالَ حِينَ حَضَرَتْهُ الْوَفَاةُ كُنْتُ كَتَمْتُ عَنْكُمْ شَيْئًا سَمِعْتُهُ مِنْ رَسُولِ اللَّهِ -صلى الله عليه وسلم- سَمِعْتُ رَسُولَ اللَّهِ -صلى الله عليه وسلم- يَقُولُ « لَوْلاَ أَنَّكُمْ تُذْنِبُونَ لَخَلَقَ اللَّهُ خَلْقًا يُذْنِبُونَ يَغْفِرُ لَهُمْ ».

It was narrated that Abu Ayyub said, when he was dying: "I have concealed from you something that I heard from the Messenger of Allah (s.a.w). I heard the Messenger of Allah (s.a.w) say: 'If you did not commit sin, Allah would create people who would commit sin, and He would forgive them."'