Halakhah for Sanhedrin 90:23
וחכ"א מה מקלל זה שכפר בעיקר אף כל שכפר בעיקר
THEY RETORTED: [ON THAT OCCASION] HE HANGED EIGHTY WOMEN, NOTWITHSTANDING THAT TWO [MALEFACTORS] MUST NOT BE TRIED ON THE SAME DAY.<span class="x" onmousemove="('comment',' Hence this occurrence cannot be brought forward as a valid precedent, owing to its extraordinary nature. Witchcraft amongst Jewish women prevailed at that time to an alarming extent, and in order to prevent a combined effort on the part of their relations to rescue the culprits, he had to execute all of them at once. He hanged them, then, to prevent such practices and to avoid rescue, but his action is no precedent, and in itself was actually illegal, as the Sages pointed out. ');"><sup>44</sup></span> <b><i>GEMARA</i></b>. Our Rabbis taught: [Scripture states,] And if he be put to death, then thou shalt hang him on a tree:<span class="x" onmousemove="('comment',' Deut. XXI, 22. ');"><sup>45</sup></span>