Sahih Muslim 589
Sahih Muslim · Book 5: The Book of Mosques and Places of Prayer · From what refuge is to be sought when in salat
'A'isha, the wife of the Messenger of Allah (ﷺ) reported:
حَدَّثَنِي أَبُو بَكْرِ بْنُ إِسْحَاقَ ، أَخْبَرَنَا أَبُو الْيَمَانِ ، أَخْبَرَنَا شُعَيْبٌ ، عَنِ الزُّهْرِيِّ ، قَالَ أَخْبَرَنِي عُرْوَةُ بْنُ الزُّبَيْرِ ، أَنَّ عَائِشَةَ ، زَوْجَ النَّبِيِّ صلى الله عليه وسلم أَخْبَرَتْهُ أَنَّ النَّبِيَّ صلى الله عليه وسلم كَانَ يَدْعُو فِي الصَّلاَةِ " اللَّهُمَّ إِنِّي أَعُوذُ بِكَ مِنْ عَذَابِ الْقَبْرِ وَأَعُوذُ بِكَ مِنْ فِتْنَةِ الْمَسِيحِ الدَّجَّالِ وَأَعُوذُ بِكَ مِنْ فِتْنَةِ الْمَحْيَا وَالْمَمَاتِ اللَّهُمَّ إِنِّي أَعُوذُ بِكَ مِنَ الْمَأْثَمِ وَالْمَغْرَمِ " . قَالَتْ فَقَالَ لَهُ قَائِلٌ مَا أَكْثَرَ مَا تَسْتَعِيذُ مِنَ الْمَغْرَمِ يَا رَسُولَ اللَّهِ . فَقَالَ " إِنَّ الرَّجُلَ إِذَا غَرِمَ حَدَّثَ فَكَذَبَ وَوَعَدَ فَأَخْلَفَ " .
The Apostle of Allah (ﷺ) used to supplicate in prayer thus:" O Allah! I seek refuge with Thee from the torment of the grave, and I seek refuge with Thee from the trial of the Masih al-Dajjal (Antichrist) and I seek refuge with Thee from the trial of life and death. O Allah! I seek refuge with Thee from sin and debt." She ('A'isha) reported: Someone said to him - (the Holy Prophet): Messenger of Allah! why is it that you so often seek refuge from debt? He said: When a (person) incurs debt, (he is obliged) to tell lies and break promise.