The Prophet has a stronger affinity to the believers than they do themselves. And his wives are their mothers. As ordained by Allah, blood relatives are more entitled ˹to inheritance˺ than ˹other˺ believers and immigrants, unless you ˹want to˺ show kindness to your ˹close˺ associates ˹through bequest˺.¹ This is decreed in the Record.² 

The Prophet is closer to the believers than their ownselves,¹ and his wives are their (believers’) mothers (as regards respect and marriage). And blood relations among each other have closer personal ties in the Decree of Allâh (regarding inheritance) than (the brotherhood of) the believers and the Muhâjirûn (emigrants from Makkah), except that you do kindness to those brothers (when the Prophet صلى الله عليه وسلم joined them in brotherhood ties). This has been written in the (Allâh’s Book of Divine) Decrees - (Al-Lauh Al-Mahfûz)."