Surah Al-Qasas Verse 10

وَأَصْبَحَ فُؤَادُ أُمِّ مُوسَىٰ فَارِغًا ۖ إِن كَادَتْ لَتُبْدِي بِهِ لَوْلَا أَن رَّبَطْنَا عَلَىٰ قَلْبِهَا لِتَكُونَ مِنَ الْمُؤْمِنِينَ

Wa asbaha fu'aadu ummi Moosaa faarighan in kaadat latubdee bihee law laaa arrabatnaa 'alaa qalbihaa litakoona minal mu'mineen

Translation / The Meaning

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.