One whose teeth pain him may not sip vinegar through them, but he may dip [his bread] in vinegar in his usual manner, and if he is [thus] cured, he is cured. One whose loins pain him may not anoint himself with wine or vinegar. He may, however, anoint himself with oil, but not [with] rose oil. Princes may rub rose oil on their wounds, for such is their custom to anoint [themselves] on weekdays. R’ Shimon says: All Israel are princes.