Musnad Ahmad 7448 — Musnad of Abu Hurayrah (may Allah be pleased with)

It is narrated from Hazrat Abu Huraira (may Allah be pleased with him) that the Noble Prophet (peace and blessings be upon him) said: Whoever kills himself with a sharp weapon (commits suicide), that sharp weapon will be in his hand with which he will stab himself in his belly in Hell, and he will remain there forever and ever. Whoever drinks poison and commits suicide, that poison will be in his hand, which he will sip in Hell, and he will remain there forever and ever. And whoever throws himself down from a mountain and commits suicide, he will keep falling down from a mountain in Hell, and he will remain there forever and ever.