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.