How Musa killed a Coptic Man Allah tells:وَلَمَّا بَلَغَ أَشُدَّهُ وَاسْتَوَى اتَيْنَاهُ حُكْمًا وَعِلْمًاAnd when he reached maturity, and was complete, We bestowed on him Hukm and knowledge.Having described Musa's beginnings, Allah then tells us that when he reached maturity, and was complete in stature, Allah gave him Hukm and religious knowledge.Mujahid said that this means Prophethood.وَكَذَلِكَ نَجْزِي الْمُحْسِنِينَAnd thus do We reward the doers of good.Then Allah describes how Musa reached the status that was decreed for him, that of Prophethood and speaking to Allah, as a direct consequence of killing the Coptic, which was the reason why he left Egypt and went to Madyan.Allah says