He prayed beside the Prophet ﷺ one night. He recited, and when he came to a verse that mentioned punishment, he would pause and seek refuge with Allah; if he came to a verse that mentioned mercy, he would pause for mercy. In his bowing he would say: 'Subhana Rabbil-Azim (Glory be to my Lord Almighty)' and in his prostration he would say: 'Subhan Rabbil-A'la (Glory be to my Lord the Most High).'"  

حَدَّثَنَا يَحْيَى وَعَبْدُ الرَّحْمَنِ وَابْنُ أَبِي عَدِيٍّ عَنْ شُعْبَةَ عَنْ سُلَيْمَانَ عَنْ سَعْدِ بْنِ عُبَيْدَةَ عَنِ الْمُسْتَوْرِدِ بْنِ الأَحْنَفِ عَنْ صِلَةَ بْنِ زُفَرَ عَنْ حُذَيْفَةَ أَنَّهُ صَلَّى إِلَى جَنْبِ النَّبِيِّ ﷺ لَيْلَةً فَقَرَأَ فَكَانَ إِذَا مَرَّ بِآيَةِ عَذَابٍ وَقَفَ وَتَعَوَّذَ وَإِذَا مَرَّ بِآيَةِ رَحْمَةٍ وَقَفَ فَدَعَا وَكَانَ يَقُولُ فِي رُكُوعِهِ سُبْحَانَ رَبِّيَ الْعَظِيمِ وَفِي سُجُودِهِ سُبْحَانَ رَبِّيَ الأَعْلَى  

Hudhaifah said that he prayed along with the Prophet ﷺ, and that he said when bowing, “Glory be to my mighty Lord, “ and when he prostrated himself, “Glory be to my most high Lord," when he came to a verse which spoke of mercy, he stopped and made supplication, and when he came to a verse which spoke of punishment, he stopped and sought refuge in Allah.  

قُلْتُ لِسُلَيْمَانَ أَدْعُو فِي الصَّلاَةِ إِذَا مَرَرْتُ بِآيَةِ تَخَوُّفٍ فَحَدَّثَنِي عَنْ سَعْدِ بْنِ عُبَيْدَةَ عَنْ مُسْتَوْرِدٍ عَنْ صِلَةَ بْنِ زُفَرَ عَنْ حُذَيْفَةَ أَنَّهُ صَلَّى مَعَ النَّبِيِّ ﷺ فَكَانَ يَقُولُ فِي رُكُوعِهِ سُبْحَانَ رَبِّيَ الْعَظِيمِ وَفِي سُجُودِهِ سُبْحَانَ رَبِّيَ الأَعْلَى وَمَا مَرَّ بِآيَةِ رَحْمَةٍ إِلاَّ وَقَفَ عِنْدَهَا فَسَأَلَ وَلاَ بِآيَةِ عَذَابٍ إِلاَّ وَقَفَ عِنْدَهَا فَتَعَوَّذَ  

he performed Salat with the Prophet, and that while he was bowing he would say: (Subhana Rabbiyal Azim); "Glorious is my Lord the Magnificent" and while prostrating: (Subhana Rabbiyal A'la) 'Glorious is my Lord the Most High.' And he would not recite an Ayah mentioning mercy, except that he would stop and ask (for mercy), and he would not recite an Ayah mentioning punishment, except that he would stop and seek refuge (with Allah from it). (Using translation from Tirmidhī 262)   

أَنَّهُ صَلَّى مَعَ النَّبِيِّ ﷺ فَكَانَ يَقُولُ فِي رُكُوعِهِ سُبْحَانَ رَبِّيَ الْعَظِيمِ وَفِي سُجُودِهِ سُبْحَانَ رَبِّيَ الْأَعْلَى وَمَا مَرَّ بِآيَةِ رَحْمَةٍ إِلَّا وَقَفَ فَسَأَلَ وَلَا بِآيَةِ عَذَابٍ إِلَّا تَعَوَّذَ  

I prayed along with the Messenger of Allah ﷺ and he used to say in his rukūʿ: ‘I glorify the perfection of Allah, the Supreme’ and his sajdah: ‘I glorify the perfection of Allah, the Most High’. He never came to an āyah of mercy except that he paused at it and asked ˹for Allah’s Mercy˺, nor he came to an āyah of punishment except that he sought the refuge ˹in Allah˺ from it.  

صَلَّيْتُ مَعَ رَسُولِ اللهِ ﷺ فَكَانَ يَقُولُ فِي رُكُوعِهِ «سُبْحَانَ رَبِّيَ الْعَظِيمِ» وَفِي سُجُودِهِ «سُبْحَانَ رَبِّيَ الْأَعْلَى» قَالَ وَمَا مَرَّ بِآيَةِ رَحْمَةٍ إِلَّا وَقَفَ عِنْدَهَا فَسَأَلَ وَلَا آيَةِ عَذَابٍ إِلَّا تَعَوَّذَ مِنْهَا