رِيَاضُ الصَّالِحِينَ
Riyad as-Salihin 9
The Book of Miscellany
Sincerity and Significance of Intentions and all Actions, Apparent and Hidden
وَعَنْ أَبِي بكرة نفيع بْن الحارث الثقفى رَضِيَ اللَّه عَنْهُ أَنَّ النَّبِيَّ صَلَّى اللَّه عَلَيْهِ وَسَلَّمَ قَالَ: "إذ الْتَقَى الْمُسْلِمَانِ بِسَيْفَيْهِمَا فَالْقَاتِلُ وَالْمَقْتُولُ فِي النَّارِ" قُلْتُ يارسول اللَّهِ، هَذَا الْقَاتِلُ فَمَا بَالُ الْمَقْتُولِ؟ قَالَ: "إِنَّهُ كَانَ حَرِيصًا عَلَى قَتْلِ صَاحِبِهِ" ((مُتَّفَقٌ عَلَيْهِ)).
Abu Bakrah Ath-Thaqafi (May Allah be pleased with him) reported: The Prophet (ﷺ) said: "When two Muslims are engaged in a combat against each other with their sword's and one is killed, both are doomed to Hell". I said, "O Messenger of Allah! As to the one who kills, it is understandable, but why the slain one?" He (ﷺ) replied: "He was eager to kill his opponent". [Al-Bukhari and Muslim].
Riyad as-Salihin, 9