佛制比丘六物圖 1.62

1.62

樹界三：（極小下至與人身等，足蔭加趺，此有五別：）一、獨樹，（取日正中影覆處，雨時水不及處。）二、相連大林，（《十誦》：「一拘盧舍。」即二里，六百步。）三、四樹小林，（《善見》：「十四肘。」計二丈五尺二寸。）四、藤蔓架，（浦萄、瓜瓠等。《僧祇》：「四面各取二十五肘。」計四丈五尺，謂從人身已去，非架外也。）五、明上下；（衣在樹下，身在上，失衣。若衣在上，身在下，不失，有落義故。）

3. The tree boundary; (at the very minimum, down to equal to a person's height, sufficient to shade someone sitting cross-legged; this has five distinctions:) First, a solitary tree; (taking the area covered by the shadow at midday, where rain does not reach.) Second, a contiguous large forest; (the Sarvāstivāda-vinaya states: "One krośa," which is two li, six hundred paces.) Third, a small grove of four trees; (the Samantapāsādikā states: "Fourteen hastas," calculated as two zhang, five chi, two cun.) Fourth, a vine trellis; (grapevines, gourds, melons, and the like. The Mahāsāṃghika-vinaya states: "Take twenty-five hastas on each of the four sides," calculated as four zhang, five chi, meaning measured outward from the person's body, not from outside the trellis.) Fifth, explaining above and below; (if the robe is beneath the tree and the body is above, the robe is forfeited. If the robe is above and the body is below, it is not forfeited, because there is the possibility of it falling down.)