《礼记·玉藻》
在太庙中行祭礼时也不应脱笛，现在有的大夫进入太庙脱笋，并不符合古礼。
既搢必盥，虽有执于朝，弗有盥矣。
Do not remove the fan when performing rituals in the ancestral temple either. Some great officers today remove the fan when entering the ancestral temple, which is not in accordance with ancient rites.