Companions of the Prophet
Bukhari :: Book 5 :: Volume 57 :: Hadith 49
Narrated Anas:
The Prophet ascended the mountain of Uhud and Abu Bakr, 'Umar and 'Uthman were accompanying him. The mountain gave a shake (i.e. trembled underneath them) . The Prophet said, "O Uhud ! Be calm." I think that the Prophet hit it with his foot, adding, "For upon you there are none but a Prophet, a Siddiq and two martyrs."