四分律比丘含注戒本 1.5

1.5

Now, tracing the origin of the true precepts and clear prohibitions, they were instituted and exempted by the Buddha alone; sages and worthies remained silent, knowing only to pay reverent homage. Therefore, what is expounded in the Vinaya treatises all takes the root sūtra as the authority; those in other ranks have never dared to speculate. In summarizing the various views, many followed their own minds; to verify and determine the past conditions is truly something for which there was no leisure. Now, because the text of the Prātimokṣa is both verbose and abridged, its hidden meanings confined by the phrasing, implementing it causes loss of propriety, while abandoning it lacks textual authority. If its features are not made manifest, people will find it difficult to comply with it fully.