Volume 3, Book 37, Number 489:
Narrated Said bin Jubair:
Ibn Abbas said, “In the verse: To every one We have appointed ‘ (Muwaliya Mawaliya means one’s)
heirs (4.33).’ (And regarding the verse) ‘And those with whom your right hands have made a pledge.’
Ibn ‘Abbas said, “When the emigrants came to the Prophet in Medina, the emigrant would inherit the
Ansari while the latter’s relatives would not inherit him because of the bond of brotherhood which
the Prophet established between them (i.e. the emigrants and the Ansar). When the verse: ‘And to
everyone We have appointed heirs’ (4.33) was revealed, it cancelled (the bond (the pledge) of broth –
erhood regarding inheritance).” Then he said, “The verse: To those also to whom your right hands
have pledged, remained valid regarding co-operation and mutual advice, while the matter of inher –
itance was excluded and it became permissible to assign something in one’s testament to the person
who had the right of inheriting before.