And he entered the city at a time of inattention by its people and found therein two men fighting: one from his faction and one from among his enemy. And the one from his faction called for help to him against the one from his enemy, so Moses struck him and [unintentionally] killed him. [Moses] said, "This is from the work of Satan. Indeed, he is a manifest, misleading enemy."
English Transliteration
Wadakhala almadeenata AAalaheeni 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
Tafsir of Verse 15
And he entered the city, at a time when its people were unheeding, and found there two men fighting; the one was of his own party, and the other was of his enemies. Then the one that was of his party cried to him to aid him against the other that was of his enemies; so Moses struck him, and despatched him, and said, 'This is of Satan's doing; he is surely an enemy misleading, manifest.'
And he entered the city at a time when its people were not watching: and he found there two men fighting,- one of his own religion, and the other, of his foes. Now the man of his own religion appealed to him against his foe, and Moses struck him with his fist and made an end of him. He said: "This is a work of Evil (Satan): for he is an enemy that manifestly misleads!"