諸經要集 20.82

20.82

又三千威儀云。用楊枝有五事。一斷當如度。二破當如法。三嚼頭不得過三分。四梳齒當中三齒。五當汁澡自用。刮舌有五事。一不得過三反。二舌上血出當止。三不得大振手污僧伽梨若足。四棄楊枝莫當人道。五當著屏處。

Furthermore, the Three Thousand Modes of Comportment states: Using a tooth-stick has five matters: first, cut it according to the proper measure; second, split it according to the rule; third, chewing the tip must not exceed three parts; fourth, clean the teeth, striking the middle three teeth; fifth, use the sap to wash and clean oneself. Scraping the tongue has five matters: first, it must not exceed three passes; second, when blood appears on the tongue, one must stop; third, do not shake the hand vigorously so as to defile the saṃghāṭī robe or the feet; fourth, do not discard the tooth-stick in a walkway; fifth, it must be placed in a secluded spot.