瑜伽師地論略纂 8.23

8.23

論云「言經行處者，謂於廣長稱其度量乃至相應身業」，西方食多蘇乳，其食難消，為一處所，量無大小，或露或隱，於中往來，擬行消食處所，於此中來去所有如法之身業也。

Where the treatise says, "A walking meditation path refers to [an area] corresponding in width and length to its measurement... down to corresponding bodily actions": In the Western regions, food contains much ghee and milk, and such food is difficult to digest. A place is made, of no fixed large or small measurement, whether exposed or sheltered, wherein one walks back and forth, intended as a place for digesting food through walking; the bodily actions performed while coming and going within this place are in accordance with the Dharma.