Whoever commits suicide
Narrated Thabit bin Ad-Dahhak (Radi-Allahu ‘anhu):
The Prophet (Sallallahu ‘Alaihi Wa Sallam) said, “Whoever intentionally
swears falsely by a religion other than Islam, then he is what he has said,
(e.g. if he says, ‘If such thing is not true then I am a Jew,’ he is really
a Jew). And whoever commits suicide with piece of iron will be punished
with the same piece of iron in the Hell Fire.” Narrated Jundab the Prophet
(Sallallahu ‘Alaihi Wa Sallam) said, “A man was inflicted with wounds and
he committed suicide, and so Allah said: My slave has caused death on
himself hurriedly, so I forbid Paradise for him.”
Bukhari Vol. 2 : No. 445