أَخْبَرَنَا مُحَمَّدُ بْنُ عَبْدِ الأَعْلَى، قَالَ حَدَّثَنَا مُعْتَمِرٌ، عَنْ أَبِيهِ، عَنْ أَنَسٍ، أَنَّ النَّبِيَّ صلى الله عليه وسلم لَيْلَةَ أُسْرِيَ بِهِ مَرَّ عَلَى مُوسَى عَلَيْهِ السَّلاَمُ وَهُوَ يُصَلِّي فِي قَبْرِهِ ‏.‏

It was narrated from Anas that: On the night on which he was taken on the Night Journey, the Prophet (PBUH) passed by Musa, peace be upon him, and he was praying in his grave. Translation Not Available

Book Ref: Sunan An Nisai Book 20 Hadith 1635
Web Ref:  Sunan An Nisai Vol 2 Book 20 Hadith 1636