حَدَّثَنَا أَبُو بَكْرِ بْنُ خَلاَّدٍ الْبَاهِلِيُّ، حَدَّثَنَا وَكِيعٌ، عَنِ ابْنِ أَبِي ذِئْبٍ، عَنْ إِسْحَاقَ بْنِ يَزِيدَ الْهُذَلِيِّ، عَنْ عَوْنِ بْنِ عَبْدِ اللَّهِ بْنِ عُتْبَةَ، عَنِ ابْنِ مَسْعُودٍ، قَالَ قَالَ رَسُولُ اللَّهِ ـ صلى الله عليه وسلم ـ " 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 " .
It wasnarrated that Ibn Mas’ud said: “The Messenger of Allah (PBUH)said: ‘When anyone of you bows, let him say in his bowing: “SubhanaRabbiyal-‘Azim (Glory is to my Lord, the Most Great)” threetimes; ifhe does that his bowing will be complete. And when anyoneof youprostrates, let him say in his prostration, ‘SubhanaRabbiyal-A’la(Glory if to my Lord, the Most High)” three times;if he does that,his prostration will be complete, and that is theminimum.’” Translation Not Available
Book Ref: Sunan Ibn Majah Book 5 Hadith 890
Web Ref: Sunan Ibn Majah Vol 1 Book 5 Hadith 890