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.
Context in Surah Ta-Ha
Nearby ayahs help place verse 20:40 in sequence and meaning.
إِذْ أَوْحَيْنَآ إِلَىٰٓ أُمِّكَ مَا يُوحَىٰٓ
When We inspired to your mother what We inspired,
أَنِ ٱقْذِفِيهِ فِى ٱلتَّابُوتِ فَٱقْذِفِيهِ فِى ٱلْيَمِّ فَلْيُلْقِهِ ٱلْيَمُّ بِٱلسَّاحِلِ يَأْخُذْهُ عَدُوٌّ لِّى وَعَدُوٌّ لَّهُۥ ۚ وَأَلْقَيْتُ عَلَيْكَ مَحَبَّةً مِّنِّى وَلِتُصْنَعَ عَلَىٰ عَيْنِىٓ
[Saying], 'Cast him into the chest and cast it into the river, and the river will throw it onto the bank; there will take him an enemy to Me and an enemy to him.' And I bestowed upon you love from Me that you would be brought up under My eye.
وَٱصْطَنَعْتُكَ لِنَفْسِى
And I produced you for Myself.
ٱذْهَبْ أَنتَ وَأَخُوكَ بِـَٔايَـٰتِى وَلَا تَنِيَا فِى ذِكْرِى
Go, you and your brother, with My signs and do not slacken in My remembrance.