Reference for Niddah 137:7
תחלתן וסופן בעינן הכא תחלתן איכא סופן ליכא
or is it possible that an examination at the beginning<span class="x" onmousemove="('comment',' On the first of the seven days. ');"><sup>5</sup></span>
Explore reference for Niddah 137:7. In-depth commentary and analysis from classical Jewish sources.