Справочник к Йехезкэля 21:1

Only after the death of Shmuel Yarchinaa, when Rav Huna became the “Head of the Academy” did Rav Chisda attain recognition as a student of Rav Huna’s. He was a man of forty at the time. In the meantime he had studied under a number of other pupils of Rav’s, and people were beginning to pay attention to his opinions. Still it is characteristic that in all the time that Rav Chisda sat under Rav Huna as a student he was very careful never to say anything that might appear to be a statement of a law.⁶⁾ערובין ס״ב ב׳. And when someone once came to consult him on a question of law he immediately referred him to Rav Huna.⁷⁾בבא מציעא ז׳ א׳. Only one exception is recorded: when the “Exilarch” asked Rav Huna what was the basis of the law which forbade bride and groom to wear crowns on their heads at a wedding. Rav Huna answered: “This was an enactment of the Rabbis who relate that in the time of the war against Emperor Vespasian it was forbidden to wear bridegroom’s crowns and to celebrate engagement parties.” After this statement Rav Huna left the school. Then Rav Chisda said: “It is not only an enactment of the Rabbis, but there is also a Bible text for it: ‘Remove the mitre and take off the crown.’ (Ezekiel, 21, 31). It is natural to ask what is the relation between the mitre and the crown? The following exegesis solves this problem: the verse means that so long as the mitre remains on the head of the High Priest, others may wear the crown, but when the mitre was removed from the head of the High Priest, the crown upon the heads of others had to fall also!”