Ruling on the so-called binding will (wasiyah waajibah)

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She died and left behind a husband, children, a full brother and a half-sister through her mother
He divided his wealth before he died and he gave to some of his children and not others

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Related Answers:
She died before taking her share of her father’s estate, and left behind a husband and mother. What is the ruling?
Should he accept his father’s money that was earned from haraam sources?
If he dies and does not leave behind anyone but a brother or sister through his mother
She died and left behind a husband, children, a full brother and a half-sister through her mother
He divided his wealth before he died and he gave to some of his children and not others

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