Sunan an-Nasai 16375
In-book no 1639أَخْبَرَنَا عَلِيُّ بْنُ خَشْرَمٍ، قَالَ حَدَّثَنَا عِيسَى، عَنْ سُلَيْمَانَ التَّيْمِيِّ، عَنْ أَنَسِ بْنِ مَالِكٍ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " مَرَرْتُ لَيْلَةَ أُسْرِيَ بِي عَلَى مُوسَى عَلَيْهِ السَّلاَمُ وَهُوَ يُصَلِّي فِي قَبْرِهِ " .
It was narrated that Anas bin Malik said: "The Messenger of Allah (ﷺ) said: 'On the night on which I was taken on the Night Journey, I passed by Musa, peace be upon him, and he was praying in his grave.'"