四分律刪繁補闕行事鈔 1.121

1.121

二明蘭若者。統明蘭若，乃有多種：謂頭陀、寄衣、盜戒、僧界、衣界、難事。且明僧界，餘下隨明。蘭若一界，諸部不定，多言僧界盡一拘盧舍（《明了論疏》云：一鼓聲間）。《雜寶藏》中翻為五里，相傳用此為定。若有難者，如《善見》云：阿蘭若界者，極小方圓七槃陀，一槃陀二十八肘。若不同意者，於外得作法事。計有百九十六肘，肘各尺八，總有五十八步四尺八寸。

Second, explaining the araṇya: Broadly speaking, there are many kinds of araṇya: namely, for dhūta, for depositing robes, regarding the stealing precept, the saṃgha boundary, the robe boundary, and times of danger. For now we explain the saṃgha boundary; the others will be explained below in due course. As for a single araṇya boundary, the various schools are not uniform; most say that the saṃgha boundary extends for one krośa (the commentary to the Vinayavibhāṣā states: 'the distance of one drum sound'). The Za baozang [jing] translates this as five li, and tradition takes this as the standard. If there is danger, as the Samantapāsādikā states: 'An araṇya boundary is at minimum seven abbhantaras square or circular, one abbhantara being twenty-eight cubits.' If someone does not agree, ritual acts may be performed outside it. By calculation, there are 196 cubits; each cubit being one foot eight inches, making a total of fifty-eight paces, four feet, and eight inches.