פירוש על קידושין 143:11

On his death bed, R. Yehudah Hanasi has some prophetic visions through which he identifies which parts of Babylonia are not kosher (and where they engage in some pretty salacious hanky-panky). He also identifies which places have apostate themselves. He can also see who had his bris (is sitting in Avraham’s lap) and who was born.