Surah Al-Ahzab (The Enemy Alliance), Verse 6

اَلنَّبِیُّ اَوْلٰی بِالْمُؤْمِنِیْنَ مِنْ اَنْفُسِهِمْ وَاَزْوَاجُهٗۤ اُمَّهٰتُهُمْ وَاُولُوا الْاَرْحَامِ بَعْضُهُمْ اَوْلٰی بِبَعْضٍ فِیْ كِتٰبِ اللّٰهِ مِنَ الْمُؤْمِنِیْنَ وَالْمُهٰجِرِیْنَ اِلَّاۤ اَنْ تَفْعَلُوْۤا اِلٰۤی اَوْلِیٰٓىِٕكُمْ مَّعْرُوْفًا كَانَ ذٰلِكَ فِی الْكِتٰبِ مَسْطُوْرًا ۟

An-Nabiyyu awlaa bil mu'mineena min anfusihim wa azwaajuhoo ummahatuhum wa ulul arhaami ba'duhum awlaa biba'din fee Kitaabil laahi minal mu'meneena wal Muhaajireena illaaa an taf'alooo ilaaa awliyaaa'ikum ma'roofaa; kaana zaalika fil kitaabi mastooraa

“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).”

Quran 33:6 (Yusuf Ali Translation)