Mishkat al-Masabih 30 Fine Qualities كتاب المناقب 99

عَنْ أَنَسٍ أَنَّ النَّبِيَّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ صَعِدَ أُحُدًا وَأَبُو بَكْرٍ وَعُمَرُ وَعُثْمَانُ فَرَجَفَ بِهِمْ فَضَرَبَهُ بِرِجْلِهِ فَقَالَ: «اثْبُتْ أُحُدُ فَإِنَّمَا عَلَيْكَ نَبِيٌّ وَصِدِّيقٌ وَشَهِيدَانِ» . رَوَاهُ الْبُخَارِيُّ

Anas told that the Prophet, Abu Bakr, `Umar and `Uthman went up Uhud and when it quivered because of them the Prophet kicked it with his foot and said, “Keep steady, Uhud, for there are only a prophet, a friend and two martyrs on you.” Bukhari transmitted it.