Sahih Muslim #4896 · The Book on Government

Sahih MuslimIt has been narrated on the authority of Abu Huraira that the Messenger of Allah
Sahih Muslim · Book 33 · The Book on Government
Sahih Muslim · كتاب 33 · كتاب الإمارة
No two such persons shall be together in Hell as if one of them is such that his presence hurts the other. It was asked: Messenger of Allah, who are they? He said: A believer who killed a disbeliever and (then) kept to the right path."
حَدَّثَنَا عَبْدُ اللَّهِ بْنُ عَوْنٍ الْهِلاَلِيُّ، حَدَّثَنَا أَبُو إِسْحَاقَ الْفَزَارِيُّ، إِبْرَاهِيمُ بْنُ مُحَمَّدٍ عَنْ سُهَيْلِ بْنِ أَبِي صَالِحٍ، عَنْ أَبِيهِ، عَنْ أَبِي هُرَيْرَةَ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم ‏
"‏ لاَ يَجْتَمِعَانِ فِي النَّارِ اجْتِمَاعًا يَضُرُّ أَحَدُهُمَا الآخَرَ ‏"‏ ‏.‏ قِيلَ مَنْ هُمْ يَا رَسُولَ اللَّهِ قَالَ ‏"‏ مُؤْمِنٌ قَتَلَ كَافِرًا ثُمَّ سَدَّدَ ‏"‏ ‏.‏
Reference : Sahih Muslim 4896In-book reference : Book 33, Hadith 192