وَلِكُلٍّ جَعَلْنَا مَوَالِيَ مِمَّا تَرَكَ الْوَالِدَانِ وَالْأَقْرَبُونَ ۚ وَالَّذِينَ عَقَدَتْ أَيْمَانُكُمْ فَآتُوهُمْ نَصِيبَهُمْ ۚ إِنَّ اللَّهَ كَانَ عَلَىٰ كُلِّ شَيْءٍ شَهِيدًا (33)
(4:33) And to everyone We have appointed rightful heirs to what the parents and near of kin might leave behind. As to those with whom you have made a solemn covenant, give them their share. Allah watches over all things. *55
*55). According to Arab customary law, those who concluded compacts of alliance and friendship also became mutual heirs. Likewise, an adopted son inherited from his foster-father. While abrogating this customary law, this verse reveals that inheritance goes to one's kin according to the rules for the distribution of inheritance laid down by God Himself. However, if a man has made commitments to people, he has the right to give away to them whatever he wishes during his lifetime.