Reference for Bava Batra 250:4

מכלל דרב הונא סבר בעל נוטל בראוי כבמוחזק

prospective [property],<span class="x" onmousemove="('comment',' At that time it was still in the possession of the grandmother. ');">⁹</span> and the husband is not [entitled] to receive of prospective [property] as of [property which is already] in the possession [of his wife at the time of her death]. Does this<span class="x" onmousemove="('comment',' The statement that the reason why the husband was not granted the right of heirship in the estate of his wife's grandmother is because he is not entitled to inherit any 'prospective property' or his wife. ');">¹⁰</span>

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