Surah Taha 20:40

إِذْ تَمْشِىٓ أُخْتُكَ فَتَقُولُ هَلْ أَدُلُّكُمْ عَلَىٰ مَن يَكْفُلُهُۥ ۖ فَرَجَعْنَـٰكَ إِلَىٰٓ أُمِّكَ كَىْ تَقَرَّ عَيْنُهَا وَلَا تَحْزَنَ ۚ وَقَتَلْتَ نَفْسًا فَنَجَّيْنَـٰكَ مِنَ ٱلْغَمِّ وَفَتَنَّـٰكَ فُتُونًا ۚ فَلَبِثْتَ سِنِينَ فِىٓ أَهْلِ مَدْيَنَ ثُمَّ جِئْتَ عَلَىٰ قَدَرٍ يَـٰمُوسَىٰ

[And We favored you] when your sister went and said, 'Shall I direct you to someone who will be responsible for him?' So We restored you to your mother that she might be content and not grieve. And you killed someone, but We saved you from retaliation and tried you with a [severe] trial. And you remained [some] years among the people of Madyan. Then you came [here] at the decreed time, O Moses.

Translation: Saheeh International

Tafsir

When idh for explanation your sister Maryam walked up to obtain news of you for they had brought wet nurses for you but you would not take to the breast of any of them and she then said “Shall I show you someone who will take care of him?”. …

Excerpt from Tafsir al-Jalalayn, commentary on 20:40, via Quran.com. The reader has the full commentary and 9 more tafsirs.