Al-Qasas 28:15

Once he entered the city unnoticed by its people[9], and found two men fighting: one of his own people and the other of his enemies. The one from his own people called him for help against his enemy, so Moses struck him with his fist, causing his death. Moses said, “This is of Satan’s work; he is a sworn enemy who mislead people.”

[9] i.e., as it was the time of rest at noon.

And he entered the city at a time of inattention by its people[1097] 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."

[1097] i.e., during the noon period of rest.

15. 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 Mûsâ (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."

And he entered the city at a time of carelessness of its folk, and he found therein two men fighting, one of his own caste, and the other of his enemies; and he who was of his caste asked him for help against him who was of his enemies. So Moses struck him with his fist and killed him. He said: This is of the devil's doing. Lo! he is an enemy, a mere misleader.