四分律行事鈔資持記 3.988

3.988

十中。初設禮者，謝證明也。在下坐者，即令預眾，令忻躍也。受親拜者，形貌纔殊，尊卑即別也。出下，示堪受之意。據文，坐已方賀；似令坐受，理亦無損；今或立者，亦是其儀。

Under [point] ten: First, performing prostrations is to give thanks to the witnesses. Sitting at the lowest seat admits him to the assembly and gladdens him. Receiving bows from relatives means that as soon as his appearance differs, the distinction between revered and humble is immediately established. Below 'chū' (comes forth), the text shows his worthiness to receive them. According to the text, congratulations occur only after he is seated; this seems to direct him to receive them while seated, which in principle is harmless. If one now stands, that is also a proper decorum.