“When the following was revealed: ‘So glorify the Name of your Lord, the Most Great’,[69:52] the Messenger of Allah ﷺ said to us: ‘Say this in your Ruku’.’ And when the following was revealed: ‘Glorify the Name of your Lord, the Most High.’[87:1] the Messenger of Allah ﷺ said to us: ‘Say this in your prostrations.’”  

لَنَا رَسُولُ اللَّهِ ﷺ اجْعَلُوهَا فِي رُكُوعِكُمْ فَلَمَّا نَزَلَتْ {سَبِّحِ اسْمَ رَبِّكَ الأَعْلَى} قَالَ لَنَا رَسُولُ اللَّهِ ﷺ اجْعَلُوهَا فِي سُجُودِكُمْ  

“Subhana Rabbiyal-‘Azim (Glory is to my Lord, the Most Great)” three times, and when he prostrated he said: “Subhana Rabbiyal-A’la (Glory is to my Lord the Most High)” three times.  

أَنَّهُ سَمِعَ رَسُولَ اللَّهِ ﷺ يَقُولُ إِذَا رَكَعَ سُبْحَانَ رَبِّيَ الْعَظِيمِ ثَلاَثَ مَرَّاتٍ وَإِذَا سَجَدَ قَالَ سُبْحَانَ رَبِّيَ الأَعْلَى ثَلاَثَ مَرَّاتٍ  

“The Messenger of Allah ﷺ often used to say when bowing and prostrating: ‘Subhanak Allahumma wa bi hamdika, Allahummaghfir li (Glory be to You, O Allah, and praise; O Allah forgive me),’ following the command given by the Qur’an.”[Surat An-Nasr (110)]  

كَانَ رَسُولُ اللَّهِ ﷺ يُكْثِرُ أَنْ يَقُولَ فِي رُكُوعِهِ وَسُجُودِهِ سُبْحَانَكَ اللَّهُمَّ وَبِحَمْدِكَ اللَّهُمَّ اغْفِرْ لِي يَتَأَوَّلُ الْقُرْآنَ  

“The Messenger of Allah ﷺ said: ‘When anyone of you bows, let him say in his bowing: “Subhana Rabbiyal-‘Azim (Glory is to my Lord, the Most Great)” three times; if he does that his bowing will be complete. And when anyone of you prostrates, let him say in his prostration, ‘Subhana Rabbiyal-A’la (Glory if to my Lord, the Most High)” three times; if he does that, his prostration will be complete, and that is the minimum.’”  

رَسُولُ اللَّهِ ﷺ إِذَا رَكَعَ أَحَدُكُمْ فَلْيَقُلْ فِي رُكُوعِهِ سُبْحَانَ رَبِّيَ الْعَظِيمِ ثَلاَثًا فَإِذَا فَعَلَ ذَلِكَ فَقَدْ تَمَّ رُكُوعُهُ وَإِذَا سَجَدَ أَحَدُكُمْ فَلْيَقُلْ فِي سُجُودِهِ سُبْحَانَ رَبِّيَ الأَعْلَى ثَلاَثًا فَإِذَا فَعَلَ ذَلِكَ فَقَدْ تَمَّ سُجُودُهُ وَذَلِكَ أَدْنَاهُ