It wasnarrated from Abu Hurairah that the Messenger of Allah (ﷺ)said:
"Whoever drinks poison and kills himself, will be sipping it inthefire of Hell forever and ever.'" (RU)
English reference (RU): Vol. 4, Book 31, Hadith 3460 (RU)
Arabic reference (RU): Book 31, Hadith 3588 (RU)