Mukhtasar Bukhari (Abridged) 1982 — Drinking poison or using harmful

Narrated by Sayyiduna Abu Hurairah (may Allah be pleased with him): The Noble Prophet (peace and blessings of Allah be upon him) said: "Whoever deliberately throws himself from a mountain and kills himself, he will be punished in Hell by being thrown from the mountain forever. And whoever deliberately takes poison to kill himself, his punishment in Hell will be that the poison will be in his hand and he will continue to consume it forever. And whoever kills himself with a weapon, his punishment in Hell will be that he will continue to stab himself in the belly with that weapon forever."