Quran 33, Al-Ahzab (Confederates) ⓘ

33:6The Prophet is closer to the believers than their selves, and his wives are (as) their mothers. And the owners of kinship are closer one to another in the ordinance of Allah than (other) believers and the fugitives (who fled from Mecca), except that ye should do kindness to your friends. This is written in the Book (of nature).

النَّبِيُّ أَوْلَى بِالْمُؤْمِنِينَ مِنْ أَنْفُسِهِمْ وَأَزْوَاجُهُ أُمَّهَاتُهُمْ وَأُولُو الْأَرْحَامِ بَعْضُهُمْ أَوْلَى بِبَعْضٍ فِي كِتَابِ اللَّهِ مِنَ الْمُؤْمِنِينَ وَالْمُهَاجِرِينَ إِلَّا أَنْ تَفْعَلُوا إِلَى أَوْلِيَائِكُمْ مَعْرُوفًا كَانَ ذَلِكَ فِي الْكِتَابِ مَسْطُورًا