Surah Al-Ahzab, Verse 4

مَّا جَعَلَ ٱللَّهُ لِرَجُلٖ مِّن قَلۡبَيۡنِ فِي جَوۡفِهِۦۚ وَمَا جَعَلَ أَزۡوَٰجَكُمُ ٱلَّٰٓـِٔي تُظَٰهِرُونَ مِنۡهُنَّ أُمَّهَٰتِكُمۡۚ وَمَا جَعَلَ أَدۡعِيَآءَكُمۡ أَبۡنَآءَكُمۡۚ ذَٰلِكُمۡ قَوۡلُكُم بِأَفۡوَٰهِكُمۡۖ وَٱللَّهُ يَقُولُ ٱلۡحَقَّ وَهُوَ يَهۡدِي ٱلسَّبِيلَ٤

mā jaʿala l-lahu lirajulin min qalbayni fī jawfihi wamā jaʿala azwājakumu allāī tuẓāhirūna min'hunna ummahātikum wamā jaʿala adʿiyāakum abnāakum dhālikum qawlukum bi-afwāhikum wal-lahu yaqūlu l-ḥaqa wahuwa yahdī l-sabīla

Allāh has not made for a man two hearts in his interior. And He has not made your wives whom you declare unlawful your mothers. And He has not made your claimed [i.e., adopted] sons your [true] sons. That is [merely] your saying by your mouths, but Allāh says the truth, and He guides to the [right] way.