Hadith on Suicide: Whoever kills himself will be punished in Hell with whatever he used to kill himself

Abu Huraira reported: The Messenger of Allah, peace be upon him, said, “Whoever kills himself with iron then his iron will be in his hand, thrusting it into his stomach in the fire of Hell abiding therein eternally; and whoever drinks poison and kills himself will drink it in the fire of Hell abiding therein eternally; and whoever threw himself off a mountain and killed himself will be thrown into the fire of Hell abiding therein eternally.”
[Sahih Muslim, Book 1, Number 199]

عَنْ أَبِي هُرَيْرَةَ قَالَ  قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ مَنْ قَتَلَ نَفْسَهُ بِحَدِيدَةٍ فَحَدِيدَتُهُ فِي يَدِهِ يَتَوَجَّأُ بِهَا فِي بَطْنِهِ فِي نَارِ جَهَنَّمَ خَالِدًا مُخَلَّدًا فِيهَا أَبَدًا وَمَنْ شَرِبَ سَمًّا فَقَتَلَ نَفْسَهُ فَهُوَ يَتَحَسَّاهُ فِي نَارِ جَهَنَّمَ خَالِدًا مُخَلَّدًا فِيهَا أَبَدًا وَمَنْ تَرَدَّى مِنْ جَبَلٍ فَقَتَلَ نَفْسَهُ فَهُوَ يَتَرَدَّى فِي نَارِ جَهَنَّمَ خَالِدًا مُخَلَّدًا فِيهَا أَبَدًا

صحيح مسلم كتاب الإيمان باب تحريم قتل الإنسان نفسه وأن من قتل نفسه بشيء يعذب به وأنه لا يدخل الجنة إلا مسلم