Yahya ibn Yahya narrated to us, saying: I recited to Malik, from Sumayy, from Abu Salih, from Abu Hurayrah, that the Messenger of Allah, peace and blessings be upon him, said: "While a man was walking on a road, he found a thorny branch on the path and removed it. Allah appreciated that for him and forgave him." And he said: "The martyrs are five: the one stricken by plague, the one who dies of a stomach disease, the one who drowns, the one killed by a collapsing building, and the martyr in the cause of Allah, Mighty and Majestic."