經律異相 19.54

19.54

After the Buddha spoke this gāthā, he addressed the monks: "From now on, traveling without carrying a water-filter bag is not permitted. If one does not carry it, one commits an offense. Exceptions where it is not an offense are when there is clear flowing water, a great river, or a spring; or when traveling from this monastery to that monastery within twenty li, it is not an offense." (Extracted from the third fascicle of the miscellaneous recitations of the Sarvāstivāda Vinaya).