Law:

Section:

(a) Muhammadan Law---

---- Wil in favour of heirs--Validity---Where a person makes a wil in favour of some of his heirs, the wil would not be valid unless other heirs give their consent to the disposition after the death of the testator.

Tafheemul Qur'an by Abul A'ala Maudoodi; Muhammadan Law by D.F. Mula and Hedaya by Charles Hamilton ref.