Sunan an-Nasa'i 1046
سنن النسائي#1046Sahihأَخْبَرَنَا إِسْحَاقُ بْنُ إِبْرَاهِيمَ، قَالَ أَنْبَأَنَا أَبُو مُعَاوِيَةَ، عَنِ الأَعْمَشِ، عَنْ سَعْدِ بْنِ عُبَيْدَةَ، عَنِ الْمُسْتَوْرِدِ بْنِ الأَحْنَفِ، عَنْ صِلَةَ بْنِ زُفَرَ، عَنْ حُذَيْفَةَ، قَالَ صَلَّيْتُ مَعَ رَسُولِ اللَّهِ صلى الله عليه وسلم فَرَكَعَ فَقَالَ فِي رُكُوعِهِ " سُبْحَانَ رَبِّيَ الْعَظِيمِ " . وَفِي سُجُودِهِ " سُبْحَانَ رَبِّيَ الأَعْلَى " .
It was narrated that Hudhaifah said:"I prayed with the Messenger of Allah (ﷺ), and he bowed and said when bowing: 'Subhana Rabbial-azim (Glory be to my Lord Almighty).' And when prostrating: 'Subhana Rabbial-'Ala (Glory be to my Lord Most High)
Scholarly Authentication
The label above is the grade most of these scholars gave — one dissenting opinion no longer speaks for all of them. If any scholar calls a narration fabricated, that verdict is shown instead, whatever the others say. Each scholar's own wording:
In-book reference: 12:18