(16) باب نَسْخِ مِيرَاثِ الْعَقْدِ بِمِيرَاثِ الرَّحِمِ
Ibn 'Abbas explained the following Qur'anic verse :
"To those also, to whom your right hand was pledged, give your portion." When the Emigrants came to Medina. they inherited from the Helpers without any blood-relationship with them for the brotherhood which the Messenger of Allah (ﷺ) established between them. When the following verse was revealed: "To (benefit) everyone we have appointed shares and heirs to property left by parent and relatives." it abrogated the verse: "To those also, to whom your right hand was pledged, give their due portion." This alliance was made for help, well wishing and cooperation. Now a legacy can be made for him. (The right to)inheritance was abolished.
Reference: Sunan Abi Dawud 2922
In-book reference: Book 19, Hadith 38
English translation: Book 18, Hadith 2916