Narrated [Ibn 'Umar (RA)]:

Allah's Messenger (ﷺ) forbade selling or giving away the right of inheritance from a freed slave. [Agreed upon].

وَعَنْهُ; { أَنَّ رَسُولَ اَللَّهِ ‏- صلى الله عليه وسلم ‏-نَهَى عَنْ بَيْعِ اَلْوَلَاءِ, وَعَنْ هِبَتِهِ } مُتَّفَقٌ عَلَيْهِ [1]‏ .‏