Sura al-Aḥzāb 33:6

ٱلنَّبِىُّ أَوْلَىٰ بِٱلْمُؤْمِنِينَ مِنْ أَنفُسِهِمْ وَأَزْوَٰجُهُۥٓ أُمَّهَٰتُهُمْ وَأُو۟لُوا۟ ٱلْأَرْحَامِ بَعْضُهُمْ أَوْلَىٰ بِبَعْضٍ فِى كِتَٰبِ ٱللَّـهِ مِنَ ٱلْمُؤْمِنِينَ وَٱلْمُهَٰجِرِينَ إِلَّآ أَن تَفْعَلُوٓا۟ إِلَىٰٓ أَوْلِيَآئِكُم مَّعْرُوفًا كَانَ ذَٰلِكَ فِى ٱلْكِتَٰبِ مَسْطُورًا

l-nabiyyu awlā bil-muʾminīna min anfusihim wa-azwājuhu ummahātuhum wa-ūlū l-arḥāmi baʿḍuhum awlā bi-baʿḍin fī kitābi allāhi mina l-muʾminīna wa-l-muhājirīna illā an tafʿalū ila awliyāʾikum maʿrūfan kāna dhālika fī l-kitābi masṭūran

The Prophet is closer to the Believers than their own selves, and his wives are their mothers. Blood-relations among each other have closer personal ties, in the Decree of Allah. Than (the Brotherhood of) Believers and Muhajirs: nevertheless do ye what is just to your closest friends: such is the writing in the Decree (of Allah).