שמות ב:יא פירוש: רש״י, רמב״ן, רשב״ם וספורנו

ויגדל משה AND MOSES WAS GROWN — But has it not already been written, (Exodus 2:10) “And the child grew”? Rabbi Judah the son of Eloai said: the first time it refers to growth in stature, the second time to greatness, — that Pharaoh appointed him to have charge over his palace (Tanchuma Yashan 2.2:17; cf. also Yalkut Shimoni on Torah 166:11).

AND WHEN MOSES WAS GROWN UP HE WENT OUT UNTO HIS BRETHREN. This is to be understood that he grew to manhood. It has already been said, And the child grew,⁸⁰Verse 10. which means that it was no longer necessary to wean him, and then the mother⁸¹Verses 8-9: And the maiden went and called the mother of the child, etc. brought him to Pharaoh’s daughter, and he became her son,⁸⁰Verse 10. for he was to stand in the presence of kings.⁸²See Proverbs 22:29. After that, he grew to manhood in maturity of mind.

מכה, perhaps he only struck him and did not kill him.