Reference for Bava Metzia 168:12

יומא חד מעלי יומא דכיפורי הוה הוו טרידי שדרו רבנן לבני בירי ואסקוהו לערסיה ואמטיוה למערתא דאבוה אשכחוה לעכנא דהדרא לה למערתא אמרו לה עכנא עכנא פתחי פיך ויכנס בן אצל אביו פתח להו

It has been taught: Rabbi said: How much procreation did this wicked [state] prevent in Israel.<span class="x" onmousemove="('comment',' R. Eleazar son of R. Simeon having been appointed by the state to track down malefactors, could not come to the school, where, by his wide knowledge of what is clean or unclean he would have permitted many women to their husbands. ');">¹¹</span>

Jastrow