Al-Qasas 15

وَدَخَلَ ٱلْمَدِينَةَ عَلَىٰ حِينِ غَفْلَةٍ مِّنْ أَهْلِهَا فَوَجَدَ فِيهَا رَجُلَيْنِ يَقْتَتِلَانِ هَٰذَا مِن شِيعَتِهِۦ وَهَٰذَا مِنْ عَدُوِّهِۦ فَٱسْتَغَٰثَهُ ٱلَّذِى مِن شِيعَتِهِۦ عَلَى ٱلَّذِى مِنْ عَدُوِّهِۦ فَوَكَزَهُۥ مُوسَىٰ فَقَضَىٰ عَلَيْهِ قَالَ هَٰذَا مِنْ عَمَلِ ٱلشَّيْطَٰنِ إِنَّهُۥ عَدُوٌّ مُّضِلٌّ مُّبِينٌ ﴿١٥﴾

Wadakhala almadeenata AAala heeni ghaflatin min ahliha fawajada feeha rajulayni yaqtatilani hatha min sheeAAatihi wahatha min AAaduwwihi faistaghathahu allathee min sheeAAatihi AAala allathee min AAaduwwihi fawakazahu moosa faqada AAalayhi qala hatha min AAamali alshshaytani innahu AAaduwwun mudillun mubeenun

And he entered the city at a time of unawareness of its people, and he found there two men fighting, - one of his party (his religion - from the Children of Israel), and the other of his foes. The man of his (own) party asked him for help against his foe, so Musa (Moses) struck him with his fist and killed him. He said: "This is of Shaitan's (Satan) doing, verily, he is a plain misleading enemy." The Noble Quran