四分律行事鈔資持記 3.389

3.389

次科。即一人受已，通及餘人；準須具戒清淨者，如〈釋相〉所簡。御乘行船，因而連引；或是船乘運載食具，無人故開。

The second section: That is, once one person receives it, it extends to the rest; it must be according to one who is fully precepted and pure, as distinguished in the 'Explanation of Marks'. Riding vehicles and steering boats are mentioned in connection with this; or it may be because vehicles and boats transport food utensils and there is no one available, so an exception is granted.