佛祖統紀 36.43

36.43

In the second year, an imperial decree summoned Dharma Master Zhu Qian to expound the Prajñā[-pāramitā] within the forbidden palace. Later he took leave and returned to Mount Shan. An imperial decree then summoned Zhi Dun to follow him in expounding the Dharma. For a time, renowned scholars made friends with him beyond worldly bounds. Liu Xi talked of the Zhuangzi, taking following one's nature to be free wandering. Zhi Dun said, 'Jie and Tuo Zhi had cruelty as their nature; could they also be said to engage in free wandering?' Wang Meng racked his thoughts to compose several hundred words, to which Zhi Dun said, 'We have been parted for long, yet why has your insight not grown?' Xi Chao asked Xie An, 'How does Dun's discourse compare to that of the Palace Attendant Ji?' Xie An said, 'Ji exerted all his strength in speaking, but only managed half.' Zhi Dun once sent a letter to Zhu Qian asking to buy a small ridge on Mount Wozhou. Zhu Qian said, 'If you wish to come, it will be given to you at once; I have never heard of Chao and You buying a mountain to become recluses.'