Mishkat al-Masabih 5 Funerals كتاب الجنائز 58

وَعَنْ عَائِشَةَ رَضِيَ اللَّهُ عَنْهَا قَالَتْ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «إِذَا كَثُرَتْ ذُنُوبُ الْعَبْدِ وَلَمْ يَكُنْ لَهُ مَا يُكَفِّرُهَا مِنَ الْعَمَلِ ابْتَلَاهُ اللَّهُ بِالْحَزَنِ لِيُكَفِّرَهَا عَنهُ» . رَوَاهُ أَحْمد

‘A’isha reported God’s messenger as saying, “When a man’s sins are numerous and he has no good deeds wherewith to atone for them, God afflicts him with sorrow to remove them from him.” Ahmad transmitted it.