Mukhtasar Muslim

Abu Huraira (may Allah be pleased with him) reports that the Messenger of Allah (peace and blessings be upon him) said: Whoever kills himself with an iron weapon, that weapon will be in his hand and he will keep striking his belly with it in the Fire of Hell forever and ever. And whoever drinks poison and kills himself, he will keep drinking that poison in the Fire of Hell forever and ever. And whoever throws himself down from a mountain and kills himself, he will keep falling down in the Fire of Hell forever and ever, and this will always be his state (that he will fall from a high place to a lower one).