(Qasas) 28 : 10
وَأَصْبَحَ فُؤَادُ أُمِّ مُوسَىٰ فَارِغًا ۖ إِنْ كَادَتْ لَتُبْدِي بِهِ لَوْلَا أَنْ رَبَطْنَا عَلَىٰ قَلْبِهَا لِتَكُونَ مِنَ الْمُؤْمِنِينَ
And the next morning the mind of Moses' mother became void; She would have disclosed the matter unless We hadn’t braced her heart to make her one among the believers.