宋高僧傳 10.30

10.30

系曰：自漢傳法，居處不分禪、律，是以通禪達法者，皆居一寺中，院有別耳。至乎百丈立制，出意用方便，亦頭陀之流也。矯枉從端，乃簡易之業也。所言自我作古。古，故也；故，事也。如立事克成，則云自此始也；不成，則云無自立辟。今海公作古，天下隨之者，益多而損少之故也。諡海公為大智，不其然乎？語曰：「利不百，不變格。」將知變斯格，厥利多矣。《彌沙塞律》有諸，雖非佛制，諸方為清淨者不得不行也。

The appraisal states: Since the transmission of the Dharma under the Han dynasty, dwelling places did not distinguish between Chan and vinaya; therefore, those who understood Chan and penetrated the Dharma all resided in a single monastery, merely having separate cloisters. When it came to Baizhang establishing regulations, he applied skillful means from his own intention, which also belonged to the current of the dhūtas. To rectify the crooked and follow the straight was indeed a simple and easy task. The saying goes: 'I make the ancient.' 'Ancient' means the old; 'the old' means affairs. If the undertaking is successfully accomplished, it is said to have begun from this; if unsuccessful, it is said that one should not establish aberrant practices on one's own. Now Master Hai established the precedent, and the whole realm followed him, precisely because the benefits were many and the harms few. To posthumously title Master Hai 'Great Wisdom'—is it not truly fitting? A proverb says: 'Unless the benefit is a hundredfold, do not change the rules.' One must know that in changing these rules, the benefits were manifold indeed. The Mahīśāsaka-vinaya contains the statement that even if something is not the Buddha's regulation, if it is pure in various regions, one must carry it out.