Qur'an 4:33

وَلِكُلٍّ جَعَلْنَا مَوَٰلِىَ مِمَّا تَرَكَ ٱلْوَٰلِدَانِ وَٱلْأَقْرَبُونَ ۚ وَٱلَّذِينَ عَقَدَتْ أَيْمَـٰنُكُمْ فَـَٔاتُوهُمْ نَصِيبَهُمْ ۚ إِنَّ ٱللَّهَ كَانَ عَلَىٰ كُلِّ شَىْءٍ شَهِيدًا

And unto each We have appointed heirs of that which parents and near kindred leave; and as for those with whom your right hands have made a covenant, give them their due. Lo! Allah is ever Witness over all things.