大比丘三千威儀 1.56

1.56

There are ten matters regarding exposing oneself while wearing [only] the nivāsana: first, without a saṃkakṣikā above, one must not put on the kāṣāya; second, wearing it [alone], one must not go before the stūpa or the Buddha image; third, wearing it [alone], one must not enter the lecture hall; fourth, wearing it [alone], one must not stand before the three masters; fifth, one must not recite sūtras together with a sthavira; sixth, wearing it [alone], one must not sit side by side with a sthavira; seventh, wearing it [alone], one must not sit on the vihārapāla's bed; eighth, wearing it [alone], one must not enter a sthavira's room; ninth, wearing it [alone], one must not enter the refectory or go before the saṅgha; tenth, without a saṃkakṣikā above, one should not go outside the gate or descend more than three feet from a pavilion.