Reference for Niddah 66:6

וליטעמיך זב גופיה היכי סתר

What then have you to say in reply? That the meaning is that only the uncleanness of <i>zibah</i> must not intervene between them;<span class="x" onmousemove="('comment',' Sc. if there was such an intervention, all the days counted are void and another seven days must be counted. ');">⁶</span>

Jastrow