Mishkat al-Masabih #817
Prayer
The Arabic includes the chain of narration (sanad) and the collector's commentary; the English translation shows the Prophet's words only.
وَعَنْهَا أَنَّ النَّبِيَّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ كَانَ يَقُولُ فِي رُكُوعِهِ وَسُجُودِهِ: «سُبُّوحٌ قُدُّوسٌ رب الْمَلَائِكَة وَالروح» . رَوَاهُ مُسلم
She told how the Prophet used to say when bowing and prostrating himself, “All-Glorious, All-Holy, Lord of the angels and the spirit."
Muslim transmitted it.
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About Mishkat al-Masabih
This hadith is #817 from Mishkat al-Masabih, in the Book of Prayer.