The Messenger of Allah ﷺ used to make supplication during the prayer saying: "O Allah, I seek refuge in Thee from the punishment of the grave; I seek refuge in Thee from the trial of the Antichrist; I seek refuge in Thee from the trial of life and the trial of death; O Allah, I seek refuge in Thee from sin and debt." Someone said to him: How often you seek refuge from debt! He replied: When a man is in debt, he talks and tells lies, makes promises and breaks them.  

أَنَّ رَسُولَ اللَّهِ ﷺ كَانَ يَدْعُو فِي صَلاَتِهِ 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 فَقَالَ لَهُ قَائِلٌ مَا أَكْثَرَ مَا تَسْتَعِيذُ مِنَ الْمَغْرَمِ فَقَالَ إِنَّ الرَّجُلَ إِذَا غَرِمَ حَدَّثَ فَكَذَبَ وَوَعَدَ فَأَخْلَفَ  

I prayed by the side of the Messenger of Allah ﷺ in the supererogatory prayer and I heard him say: "I refuge in Allah from the Hell-Fire; woe to the inmates of the Hell-fire!"  

صَلَّيْتُ إِلَى جَنْبِ رَسُولِ اللَّهِ ﷺ فِي صَلاَةِ تَطَوُّعٍ فَسَمِعْتُهُ يَقُولُ أَعُوذُ بِاللَّهِ مِنَ النَّارِ وَيْلٌ لأَهْلِ النَّارِ  

Abu Hurairah said; The Messenger of Allah (May peace be upon him) got up for the prayer and we also stood up along with him. A Bedouin said said during prayer; O Allah, show mercy to me and to Muhammed and do not show mercy to anyone along with us. When the Messenger of Allah (May peace be upon him) uttered the salutation, he said to the Bedouin; you narrowed down a vast (thing). By this he meant the mercy of Allah.  

قَامَ رَسُولُ اللَّهِ ﷺ إِلَى الصَّلاَةِ وَقُمْنَا مَعَهُ فَقَالَ أَعْرَابِيٌّ فِي الصَّلاَةِ اللَّهُمَّ ارْحَمْنِي وَمُحَمَّدًا وَلاَ تَرْحَمْ مَعَنَا أَحَدًا فَلَمَّا سَلَّمَ رَسُولُ اللَّهِ ﷺ قَالَ لِلأَعْرَابِيِّ لَقَدْ تَحَجَّرْتَ وَاسِعًا يُرِيدُ رَحْمَةَ اللَّهِ ﷻ  

“Glorify the name of thy Lord, the Most High.” He would say:”Glory be to Allah, the most High”. Abu Dawud said; In this tradition the other narrators have differed from the narrator Wakl. This has been narrated by Wakl, and Shu’bah from Abu Ishaq, from Sa’ld b. Jubair, from Ibn ‘Abbas as his own statement (and not from the Prophet)  

أَنَّ النَّبِيَّ ﷺ كَانَ إِذَا قَرَأَ { سَبِّحِ اسْمَ رَبِّكَ الأَعْلَى } قَالَ سُبْحَانَ رَبِّيَ الأَعْلَى  

A man used to pray on the roof of his house. When he recited the verse “Is not He able to bring the dead to life?” [Surah al-Qiyamah:42] he would say: ”Glory be to You, then, why not?” They asked him about it, and he replied: "I heard it from the Messenger of Allah ﷺ". Abu Dawud said : Ahmad (b. Hanbal) said: It is pleasing to me that one should recite in the obligatory prayer those supplications which have occurred in the Quran.  

كَانَ رَجُلٌ يُصَلِّي فَوْقَ بَيْتِهِ وَكَانَ إِذَا قَرَأَ { أَلَيْسَ ذَلِكَ بِقَادِرٍ عَلَى أَنْ يُحْيِيَ الْمَوْتَى } قَالَ سُبْحَانَكَ فَبَلَى فَسَأَلُوهُ عَنْ ذَلِكَ فَقَالَ سَمِعْتُهُ مِنْ رَسُولِ اللَّهِ ﷺ