Sunan an-Nasa'i 1632
سنن النسائي#1632Sahihأَخْبَرَنَا الْعَبَّاسُ بْنُ مُحَمَّدٍ، قَالَ حَدَّثَنَا يُونُسُ بْنُ مُحَمَّدٍ، قَالَ حَدَّثَنَا حَمَّادُ بْنُ سَلَمَةَ، عَنْ سُلَيْمَانَ التَّيْمِيِّ، وَثَابِتٍ، عَنْ أَنَسٍ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ " أَتَيْتُ عَلَى مُوسَى عَلَيْهِ السَّلاَمُ عِنْدَ الْكَثِيبِ الأَحْمَرِ وَهُوَ قَائِمٌ يُصَلِّي " . قَالَ أَبُو عَبْدِ الرَّحْمَنِ هَذَا أَوْلَى بِالصَّوَابِ عِنْدَنَا مِنْ حَدِيثِ مُعَاذِ بْنِ خَالِدٍ وَاللَّهُ تَعَالَى أَعْلَمُ .
It was narrated from Anas that :The Messenger of Allah (ﷺ) said: "I came to Musa at the red dune and he was standing and praying
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: 20:35