The Messenger of Allah ﷺ said: "On the night on which I was taken on the Night Journey (Al-Isra') I came to Musa, peace be upon him, at the red dune, and he was standing, praying in his grave." (Using translation from Nasāʾī 1631)
أَنَّ رَسُولَ اللهِ ﷺ قَالَ «أَتَيْتُ لَيْلَةَ أُسْرِيَ بِي عَلَى مُوسَى عِنْدَ الْكَثِيبِ الْأَحْمَرِ وَهُوَ قَائِمٌ يُصَلِّي فِي قَبْرِهِ» خَالَفَهُ حَبَّانُ بْنُ هِلَالٍ