四分律行事鈔資持記 3.88

3.88

八中，初明遇難暫開不著。準知無難不暫離身。彼有四事，到彼國不著，如文所列，但略去標數耳。若下，制敬護。

In the eighth [part], first it clarifies the temporary permission not to wear it when encountering hardship. From this it is known that without hardship, it should not leave one's body even for a moment. There are four circumstances under which, upon arriving in that country, one does not wear it, as listed in the text, but the explicit enumeration is merely omitted. From 'If' onward, it enjoins respect and protection.