وَقَالَ أَبُو جَعْفَرٍ عَلَيْهِ اَلسَّلاَمُ: «مَا مِنْ مُؤْمِنٍ يُصَابُ بِمُصِيبَةٍ فِي اَلدُّنْيَا فَيَسْتَرْجِعُ عِنْدَ مُصِيبَتِهِ وَ يَصْبِرُ حِينَ تَفْجَأُهُ اَلْمُصِيبَةُ إِلاَّ غَفَرَ اَللَّهُ لَهُ مَا مَضَى مِنْ ذُنُوبِهِ إِلاَّ اَلْكَبَائِرَ اَلَّتِي أَوْجَبَ اَللَّهُ عَزَّ وَ جَلَّ عَلَيْهَا اَلنَّارَ وَ كُلَّمَا ذَكَرَ مُصِيبَتَهُ فِيمَا يَسْتَقْبِلُ مِنْ عُمُرِهِ فَاسْتَرْجَعَ عِنْدَهَا وَ حَمِدَ اَللَّهَ عَزَّ وَ جَلَّ عِنْدَهَا، غَفَرَ اَللَّهُ لَهُ كُلَّ ذَنْبٍ اِكْتَسَبَهُ فِيمَا بَيْنَ اَلاِسْتِرْجَاعِ اَلْأَوَّلِ إِلَى اَلاِسْتِرْجَاعِ اَلْأَخِيرِ إِلاَّ اَلْكَبَائِرَ مِنَ اَلذُّنُوبِ.
Imam Muhammad ibn Ali Al-Baqir (a.s) said: "Whenever a believer is afflicted with a calamity in this world and responds by reciting the phrase of 'istirja' (saying 'Indeed, we belong to Allah (swt) and to Him we will return') at the moment of calamity and exhibits patience, Allah (swt) forgives their past sins, except for major sins for which Allah (swt) has decreed Hellfire. Additionally, each time the believer remembers that calamity in the future, recites 'istirja' again, and praises Allah (swt), Allah (swt) forgives all sins committed between the first instance of istirja' and the next, except for major sins."