فلما قضى موسى الأجل وسار بأهله آنس من جانب الطور نارا قال (28:29) بالانجليزي

(28:29) When Moses completed the term *40 and he was travelling with his family, he saw a fire in the direction of Tur. *41 He said to his family, "Stay a while: I have seen a fire: I may bring some information from there, or a burning brand with which you may warm yourselves."

Tafseer Abu-al-A'la Maududi

Page 389 English Traditional

*40) According to Hadrat Hasan bin `Ali bin Abi Talib, the Prophet Moses had completed the ten years term instead of the eight years. According to Ibn 'Abbas, this has been related on the authority of the Holy Prophet himself. He has said, "Moses (peace be upon him) completed the term which was more perfect and more agreeable to his father-in-law, i.e. ten years."
*41) That the direction of the journey was towards Mt. Tur shows that the Prophet Moses might be traveling to Egypt with his family, for Tur lies on the way from Midian to Egypt. Probably Prophet Moses thought that he had stayed away from home for ten long years and the Pharaoh in whose reign he had left Egypt had also died, if he quietly went back and stayed with his people, nobody would know it.
The Biblical version of the sequence of events is different from the Qur'an's. It says that the Prophet Moses `led the flocks (of his father-in-law) to the backside of the desert, and came to the mountain of God, even to Horeb." There God spoke to him, and appointed him to Prophethood and commanded him to go to Egypt. Then Moses went back to Jethro, his father-in-law, took his permission and went to Egypt with his family. (Exod. 3: 1, 4: 18) Contrary to this, the Qur'an says that the Prophet Moses left Midian with his family after completing the term and during this journey AIIah spoke to him and appointed him to Prophethood.
Both the Bible and the Talmud agree that the Pharaoh in whose house Prophet Moses had been brought up had died during his stay in Midian, and now another Pharaoh was the king of Egypt.