Does Islamic law permit the heirs to re-divide or reclaim the quarter of the estate, after discovering a grave injustice in its valuation and division, knowing that their father bequeathed a quarter of his wealth for the sake of Allah, and that the majority of the heirs do not possess their daily sustenance?

The matter of inheritances is serious and complex. A mere fatwa is insufficient for it; rather, it must be referred to the Sharia courts. A claim of error in valuation and fraud permits the annulment of the division, as stated in Mukhtasar Khalil and Mawahib al-Jalil. We advise referring the issue to the Sharia courts or consulting scholars directly.