釋氏要覽 1.461

1.461

根本百一羯磨。佛言。不應禮有染苾芻。有染苾芻亦不應禮他。違者得越法罪。優波梨白佛云何名有染。佛言染有二種。一不淨染。二飲食染。且飲食染者。若食噉未漱口。設漱刷尚有餘津膩。是名有染。若互禮招愆故。食後事須漱刷口齒。

The Mūlasarvāstivāda-ekottarakarma-śataka states: The Buddha said, "One must not pay homage to a stained bhikṣu, nor must a stained bhikṣu pay homage to others. One who violates this commits an offense of transgression of the Dharma." Upāli addressed the Buddha, "What is called 'stained'?" The Buddha said, "There are two kinds of stain: first, stain from impurity; second, stain from food and drink. Regarding stain from food and drink: if one has eaten and not yet rinsed one's mouth, or even if one has rinsed and brushed, there remains lingering saliva and grease, this is called 'stained.' If mutual paying of homage incurs fault, then after eating one must rinse and brush the mouth and teeth."