高僧傳 4.27

4.27

晚移石城山，又立棲光寺。宴坐山門，遊心禪苑，木喰㵎飲，浪志無生。乃注《安般》、《四禪》諸經及〈即色遊玄論〉、〈聖不辯知論〉、〈道行旨歸〉、〈學道誡〉等。追蹤馬鳴，躡影龍樹，義應法本，不違實相。晚出山陰，講《維摩經》，遁為法師，許詢為都講，遁通一義，眾人咸謂詢無以厝難，詢設一難，亦謂遁不復能通，如此至竟，兩家不竭。凡在聽者，咸謂審得遁旨，迴令自說，得兩，三反便亂。

Later he moved to Mount Shicheng and established the Qiguang Temple. Sitting in tranquil meditation at the mountain gate, his mind wandered in the groves of dhyāna; eating tree fruits and drinking from mountain torrents, he set his aspirations freely on non-arising. He then annotated various scriptures such as the Ānāpānasmṛti and the Four Dhyānas, and wrote the 'Treatise on Wandering in the Mystery through Immediate Form', the 'Treatise on the Sage Not Debating Knowledge', the 'Purport of the Daoxing', and 'Admonitions for Learning the Way'. Following in the footsteps of Aśvaghoṣa and treading in the shadow of Nāgārjuna, his interpretations accorded with the fundamental Dharma and did not contradict the true nature of reality. In his later years he came out to Shanyin to lecture on the Vimalakīrti-nirdeśa-sūtra. Dun served as Dharma master and Xu Xun as the disputant. Whenever Dun elucidated an interpretation, the assembly all thought Xun had no way to raise an objection; whenever Xun raised an objection, they likewise thought Dun could no longer resolve it. Thus it went on to the end, neither side exhausting their arguments. All among the listeners believed they had fully grasped Dun's purport, but when turned back to explain it themselves, after two or three turns they fell into confusion.