﴿ وَقَالَتْ لِأُخْتِهِۦ قُصِّيهِ ۖ فَبَصُرَتْ بِهِۦ عَن جُنُبٍۢ وَهُمْ لَا يَشْعُرُونَ ﴾

“And so she said to his sister, “Follow him” - and [the girl] watched him from afar, while they [who had taken him in] were not aware of it,”

(And she) the mother of Moses (said unto his sister) the sister of Moses whose name was Mary: (Trace him. So she observed him) the child (from afar, and they perceived not) that she is the sister of Moses.