Is it permissible to buy the house that was bequeathed to some of the heirs and not others without their consent?

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Their parents made bequests before they died stating that the estate was to be divided in a specific manner; do they have to follow that?

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Ruling on buying stolen goods and selling them to someone else
Their parents made bequests before they died stating that the estate was to be divided in a specific manner; do they have to follow that?

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