Sahih Muslim , Book 1, Hadith 204 (USC-MSA) ⓘ
In the hadith narrated by Shu'ba the words are: Verily the Messenger of Allah said: He who took an oath on a religion other than Islam as a liar would become so as he said, and he who slaughtered himself with a thing would be slaughtered with that on the Day of Resurrection.
وَحَدَّثَنَا مُحَمَّدُ بْنُ رَافِعٍ، عَنْ عَبْدِ الرَّزَّاقِ، عَنِ الثَّوْرِيِّ، عَنْ خَالِدٍ الْحَذَّاءِ، عَنْ أَبِي قِلاَبَةَ، عَنْ ثَابِتِ بْنِ الضَّحَّاكِ، قَالَ قَالَ النَّبِيُّ صلى الله عليه وسلم " مَنْ حَلَفَ بِمِلَّةٍ سِوَى الإِسْلاَمِ كَاذِبًا مُتَعَمِّدًا فَهُوَ كَمَا قَالَ وَمَنْ قَتَلَ نَفْسَهُ بِشَىْءٍ عَذَّبَهُ اللَّهُ بِهِ فِي نَارِ جَهَنَّمَ " . هَذَا حَدِيثُ سُفْيَانَ . وَأَمَّا شُعْبَةُ فَحَدِيثُهُ أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ " مَنْ حَلَفَ بِمِلَّةٍ سِوَى الإِسْلاَمِ كَاذِبًا فَهُوَ كَمَا قَالَ وَمَنْ ذَبَحَ نَفْسَهُ بِشَىْءٍ ذُبِحَ بِهِ يَوْمَ الْقِيَامَةِ " .
also referenced under: Book 1, Hadith 211 (In-Book) & Hadith 110 (Reference)