四分律比丘含注戒本 1.191

1.191

若比丘有難處、妨處，自求作屋，無主，自為己，不將諸比丘指示處所，若過量作者，僧伽婆尸沙。

If a bhikṣu, on a site with dangers or obstacles, begs to build a hut that is ownerless and made for himself, without bringing the bhikṣus to mark out the site, or if he builds it exceeding the measurements, it is a saṃghāvaśeṣa.