NASAI 1740:
from Saʿīd b. ʿAbd al-Raḥman b. Abzá from his father —
"Abu Dawud narrated to us from Shu'bah, from Qatadah, who said: I heard 'Azarah narrating from Sa'eed bin 'Abdur-Rahman Ibn Abza, from his father That the Messenger of Allah ﷺ used to recite in witr: Glorify the Name of your Lord, the Most High;" and "Say: O you disbelievers!;' and 'Say: He is Allah, (the) One.' And when he had finished praying, he said: Subhanal-Malikil-Quddus (Glory be to the Sovereign, the Most Holy) three times."
النسائي ١٧٤٠:
عن سعيد بن عبد الرحمن بن ابزى عن أبيه —
أَنَّ رَسُولَ اللَّهِ ﷺ كَانَ يُوتِرُ بِ { سَبِّحِ اسْمَ رَبِّكَ الأَعْلَى } وَ { قُلْ يَا أَيُّهَا الْكَافِرُونَ } وَ { قُلْ هُوَ اللَّهُ أَحَدٌ } فَإِذَا فَرَغَ قَالَ سُبْحَانَ الْمَلِكِ الْقُدُّوسِ ثَلاَثًا
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