ٱدۡعُوهُمۡ لِأٓبَآئِهِمۡ هُوَ أَقۡسَطُ عِندَ ٱللَّهِۚ فَإِن لَّمۡ تَعۡلَمُوٓاْ ءَابَآءَهُمۡ فَإِخۡوَٰنُكُمۡ فِي ٱلدِّينِ وَمَوَٰلِيكُمۡۚ وَلَيۡسَ عَلَيۡكُمۡ جُنَاحٞ فِيمَآ أَخۡطَأۡتُم بِهِۦ وَلَٰكِن مَّا تَعَمَّدَتۡ قُلُوبُكُمۡۚ وَكَانَ ٱللَّهُ غَفُورٗا رَّحِيمًا
Call them (adopted sons) by (the names of) their fathers, that is more just with Allah. But if you know not their father's (names, call them) your brothers in faith and Mawalikum (your freed slaves). And there is no sin on you if you make a mistake therein, except in regard to what your hearts deliberately intend. And Allah is Ever OftForgiving, Most Merciful.
ٱلنَّبِيُّ أَوۡلَىٰ بِٱلۡمُؤۡمِنِينَ مِنۡ أَنفُسِهِمۡۖ وَأَزۡوَٰجُهُۥٓ أُمَّهَٰتُهُمۡۗ وَأُوْلُواْ ٱلۡأَرۡحَامِ بَعۡضُهُمۡ أَوۡلَىٰ بِبَعۡضٖ فِي كِتَٰبِ ٱللَّهِ مِنَ ٱلۡمُؤۡمِنِينَ وَٱلۡمُهَٰجِرِينَ إِلَّآ أَن تَفۡعَلُوٓاْ إِلَىٰٓ أَوۡلِيَآئِكُم مَّعۡرُوفٗاۚ كَانَ ذَٰلِكَ فِي ٱلۡكِتَٰبِ مَسۡطُورٗا
The Prophet is closer to the believers than their ownselves, and his wives are their (believers') mothers (as regards respect and marriage). And blood relations among each other have closer personal ties in the Decree of Allah (regarding inheritance) than (the brotherhood of) the believers and the Muhajirun (emigrants from Makkah, etc.), except that you do kindness to those brothers (when the Prophet SAW joined them in brotherhood ties). This has been written in the (Allah's Book of Divine) Decrees (AlLauh AlMahfuz)."