翻譯名義集 7.33

7.33

[Parisrāvaṇa] This is translated as "water-filtering strainer." The Huizheng ji states: "In the Western Regions, they use fine white cotton cloth; in China, one should take dense silk. If raw silk is used, small insects pass right through. One may take four feet of boiled silk, grasp the edges and pull them longwise, stitch the two ends together, and that is the pattern of the strainer. Attach straps at the two corners and straight loops at both sides (pronounced guan, resembling the handles of a caldron). Set a horizontal stick of one foot six inches in the middle, tie both sides to pillars, and place a basin beneath it. When pouring water, the bottom of the water jar must enter inside the strainer. If not done thus, insects will fall with the water, dropping to the ground or into the basin, and killing them is still not avoided." The Mahāsāṃghika Vinaya states that if the insects are minute, it should be filtered with three layers. The Vinayamātṛkā states: "One should make a water-filtering bag of two layers. If [insects] are still present, one should make three layers; they must not be sewn together as a double layer. Fearing that insects might be caught between them and difficult to release, one should make each layer separate, turning each layer over one by one; only then is life protected." The Mūlasarvāstivāda Ekottarakarma explains five kinds of water strainers: first, the square strainer, using three feet or two feet of silk, made large or small according to circumstance; second, the Dharma-vase, which is a yin-yang vase; third, the kuṇḍikā, with its mouth tied with silk, suspended with a rope and submerged in the water, and pulled out when full; fourth, the ladle strainer; fifth, the robe-corner strainer, where one simply takes dense silk one span square, and either ties it to the bottle's mouth or places it in the bowl, using it to filter water.