﴿ فَٱنطَلَقَا حَتَّىٰٓ إِذَا لَقِيَا غُلَٰمًۭا فَقَتَلَهُۥ قَالَ أَقَتَلْتَ نَفْسًۭا زَكِيَّةًۢ بِغَيْرِ نَفْسٍۢ لَّقَدْ جِئْتَ شَيْـًۭٔا نُّكْرًۭا ﴾

“And so the two went on, till, when they met a young man, [the sage] slew him -(whereupon Moses] exclaimed: "Hast thou slain an innocent human being without [his having taken] another man's life? Indeed, thou hast done a terrible thing!"”

So they set off until, when they met a boy: this is the soul, which manifests itself with its attributes and thus veils the heart accordingly becomes an evil-commanding soul. The slaying of him is the extinguishing of anger, passionate desire and all of the [other] attributes. 'Have you slain an innocent soul: an objection [arising] from the heart's affection for the soul.