Reference for Keritot 28:19

שעבר משום כלת בנו שניה כדתני'

The same distinction is made between the daughter of a son and the daughter of a son's son etc. to the end of all generations.<span class="x" onmousemove="('comment',' I.e., ad infinitum. The daughter of any of his male descendants that stands at the end of a chain of male offsprings is forbidden to him by rabbinical enactment.');">¹⁰</span>

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