Yoma 13a and Yoma 13b, what happens to the substitute Kohen Gadol after serving as Kohen Gadol on a Yom Kippur, R. Yehudah’s view of setting up a second wife for the Kohen Gadol in case his wife passes away, why yibum can happen even if a man has two wives or only one who was betrothed, and what happens if a Kohen Gadol loses a close relative.
