Reference for Niddah 66:7

לטהרתו אמר רחמנא שלא תהא טומאה מפסקת ביניהן

well, here also it may be explained that the meaning is that only the uncleanness of <i>zibah</i> must not intervene between them.<span class="x" onmousemove="('comment',' The uncleanness of an emission of semen, however, is not regarded as an intervention. ');">⁷</span>

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