القصص — Al-Qasas Ayat 10
وَاَصْبَحَ فُؤَادُ اُمِّ مُوْسٰى فٰرِغًاۗ اِنْ كَادَتْ لَتُبْدِيْ بِهٖ لَوْلَآ اَنْ رَّبَطْنَا عَلٰى قَلْبِهَا لِتَكُوْنَ مِنَ الْمُؤْمِنِيْنَ
Wa aṣbaḥa fu'ādu ummi mūsā fārigā(n), in kādat latubdī bihī lau lā ar rabaṭnā ‘alā qalbihā litakūna minal-mu'minīn(a).
"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."