Al-Qasas 28:10

وَأَصۡبَحَ فُؤَادُ أُمِّ مُوسَىٰ فَٰرِغًاۖ إِن كَادَتۡ لَتُبۡدِي بِهِۦ لَوۡلَآ أَن رَّبَطۡنَا عَلَىٰ قَلۡبِهَا لِتَكُونَ مِنَ ٱلۡمُؤۡمِنِينَ 10

And the heart of Moses' mother became empty [of all else]. She was about to disclose [the matter concerning] him had We not bound fast her heart that she would be of the believers