四分戒本疏卷第一．第二．第三 3.13

3.13

共未受具人同誦戒第六　制意者。多論四種義故佛制此戒。一為異外道故。二為師與弟子位別故。三為分別言語分了故。四為依實義不貴音聲故　別緣有五。一是佛所說法。二字句味。三未具人。四齊聲同誦。五言說了了便犯。已下明戒本。此戒因六群比丘與諸長者在講堂。高聲同誦經語。惱亂坐禪比丘。佛便制戒。

Precept 6: Reciting together with an unordained person. Regarding the intention behind the formulation: The Sarvāstivāda-vinaya-vibhāṣā states that the Buddha formulated this precept on account of four meanings: 1. to distinguish from the non-Buddhists; 2. because the stations of master and disciple are distinct; 3. to distinguish and make the spoken words clear; 4. to rely on the actual meaning and not value mere vocal sound. The specific conditions comprise five: 1. It is the Dharma spoken by the Buddha. 2. Words, phrases, and syllables. 3. An unordained person. 4. Chanting together in unison. 5. As soon as the spoken words are distinct, one commits the offense. Below, the Prātimokṣa text is explained. This precept arose because the group of six monks were in the lecture hall with various householders, reciting the words of the sūtras aloud in unison, disturbing the bhikṣus who were sitting in meditation; the Buddha then formulated the precept.