Qur'an 33:4

مَّا جَعَلَ ٱللَّهُ لِرَجُلٍ مِّن قَلْبَيْنِ فِى جَوْفِهِۦ ۚ وَمَا جَعَلَ أَزْوَٰجَكُمُ ٱلَّـٰٓـِٔى تُظَـٰهِرُونَ مِنْهُنَّ أُمَّهَـٰتِكُمْ ۚ وَمَا جَعَلَ أَدْعِيَآءَكُمْ أَبْنَآءَكُمْ ۚ ذَٰلِكُمْ قَوْلُكُم بِأَفْوَٰهِكُمْ ۖ وَٱللَّهُ يَقُولُ ٱلْحَقَّ وَهُوَ يَهْدِى ٱلسَّبِيلَ

“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.”

Al-Ahzaab 33:4 · Saheeh International