Abu Huraira reported God’s Messenger as saying, “He who throws himself from a mountain and kills himself will be thrown down in the fire of jahannam and remain in it for ever and ever; he who sips poison and kills himself will have his poison in his hand and sip it for ever and ever in the fire of jahannam; and he who kills himself with a piece of iron will have his piece of iron in his hand and will be stabbed with it in his belly in the fire of jahannam for ever and ever.”
Jundub b. ‘Abdallah reported God’s Messenger as saying that among those who lived before their time there was a man who had a wound and had so little patience to bear it that he took a knife with which he cut off his hand, but the blood did not cease to flow till he died. God most high said, “My servant has tried to outstrip me in taking his life, so I have excluded him from paradise.”
‘Abdallah b. ‘Amr reported God’s Messenger as saying, “If anyone kills a man who has made a covenant* he will not experience the fragrance of paradise, yet its odour can be experienced at a distance of forty years’ journey.”
Bukhari transmitted it.
* Mu'ahid. This is used of a member of protected communities, but is also used of anyone who belongs to a non-Muslim community with whom a treaty of peace has been made.