And we ordained that he refused suck at first, until (His sister came up and) said: “Shall I point out to you the people of a house that will nourish and bring him up for you and be sincerely attached to him?”…
For you: i.e., on your behalf.
Thus Moses got the benefit of his mother’s milk as well
as the prestige and the opportunities of being brought up
in the royal family, with the best of teachers to teach
him Egyptian wisdom. In addition, there was the comfort
to his mother.
Yusuf Ali, Abdullah. Translation and Commentary of the Quran. (surah 28 verse 12). Quran Arabic with English Translation & Commentary (Tafsir) by Abdullah Yusuf Ali, Free Download (quran4u.com)