Rabbah bar bar Chanah Hears Korach's Followers
An Arab merchant shows Rabbah bar bar Chanah the smoking cracks where Korach's men were swallowed, and he hears them cry, "Moshe and his Torah are true."
Rabbah bar Bar Channa met an Arab merchant. The merchant said to him, “Come, I will show you the men of Korach that were swallowed up.” He showed him two cracks that emitted smoke. Rabbah bar Bar Channa took a piece of clipped wool, dipped it in water, attached it to the point of a spear, and put it in there. When he took it out, it was singed. Thereupon the merchant said, “Listen attentively to what you are about to hear.”
Rabbah bar Bar Channa heard chanting from the followers of Korach: “Moshe and his Torah are true and we are liars.” Whereupon the merchant said, “Every 30 days, Gehinnom causes them to turn back here as one turns flesh in a pot, and they say thus: ‘Moshe and his law are true and we are liars’” (Sanhedrin 110a–b).