Sunan an-Nasa'i, Book 20, Hadith 68 (In-Book) ⓘ
It was narrated from Hudhaifah that: He prayed with the Messenger of Allah during Ramadan. He bowed and said: "Subhana Rabbiyal-Azim while bowing, for as long as he had stood. Then he sat down and said: "Rabbighfirli, Rabbighfirli (Lord forgive me, Lord forgive me)," for as long as he had stood. Then he prostrated and said: "Subhana Rabbiyal-'Ala for as long as he had stood And he prayed no more than four rak'ahs when Bilal came for Al-Ghadah.
أَخْبَرَنَا إِسْحَاقُ بْنُ إِبْرَاهِيمَ، قَالَ أَنْبَأَنَا النَّضْرُ بْنُ مُحَمَّدٍ الْمَرْوَزِيُّ، - ثِقَةٌ - قَالَ حَدَّثَنَا الْعَلاَءُ بْنُ الْمُسَيَّبِ، عَنْ عَمْرِو بْنِ مُرَّةَ، عَنْ طَلْحَةَ بْنِ يَزِيدَ الأَنْصَارِيِّ، عَنْ حُذَيْفَةَ، أَنَّهُ صَلَّى مَعَ رَسُولِ اللَّهِ صلى الله عليه وسلم فِي رَمَضَانَ فَرَكَعَ فَقَالَ فِي رُكُوعِهِ " سُبْحَانَ رَبِّيَ الْعَظِيمِ " . مِثْلَ مَا كَانَ قَائِمًا ثُمَّ جَلَسَ يَقُولُ " رَبِّ اغْفِرْ لِي رَبِّ اغْفِرْ لِي " . مِثْلَ مَا كَانَ قَائِمًا ثُمَّ سَجَدَ فَقَالَ " سُبْحَانَ رَبِّيَ الأَعْلَى " . مِثْلَ مَا كَانَ قَائِمًا فَمَا صَلَّى إِلاَّ أَرْبَعَ رَكَعَاتٍ حَتَّى جَاءَ بِلاَلٌ إِلَى الْغَدَاةِ . قَالَ أَبُو عَبْدِ الرَّحْمَنِ هَذَا الْحَدِيثُ عِنْدِي مُرْسَلٌ وَطَلْحَةُ بْنُ يَزِيدَ لاَ أَعْلَمُهُ سَمِعَ مِنْ حُذَيْفَةَ شَيْئًا وَغَيْرُ الْعَلاَءِ بْنِ الْمُسَيَّبِ قَالَ فِي هَذَا الْحَدِيثِ عَنْ طَلْحَةَ عَنْ رَجُلٍ عَنْ حُذَيْفَةَ .
also referenced under: Hadith 1665 (Reference) & Volume 2, Book 20, Hadith 1666 (DarusSalam)