Quran 40:19 from Surah Ghafir on Divine Marvels.
يَعۡلَمُ خَآئِنَةَ ٱلۡأَعۡيُنِ وَمَا تُخۡفِي ٱلصُّدُورُ
English translation: He knows (the) stealthy glance (the) stealthy glance and what conceal the breasts
Transliteration: ya'lamu khainata al-a'yuni wama tukh'fi al-suduru