Reference for Yevamot 76:21

אמר רב אשי מתני' נמי דיקא דקתני יחלוקו יורשי הבעל עם יורשי האב ולא קתני יורשי האב עם יורשי הבעל ש"מ

or not,<span class="x" onmousemove="('comment',' And is consequently entitled to receive it. ');">³⁷</span> and yet the doubt overrides the certainty.<span class="x" onmousemove="('comment',' Cf. supra p. 243, n, 12. Despite the doubt as to whether she is entitled to her kethubah she receives it, according to Beth Shammai; and she thus takes away the amount of her kethubah from the heirs of her husband who are the undoubted successors to his property. ');">³⁸</span>

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