佛祖統紀 40.35

40.35

In the twenty-sixth year, an edict ordered that the two monasteries of Longxing and Kaiyuan be established in all commanderies throughout the empire. / The śramaṇa Faxiu dreamed of an extraordinary monk who exhorted him to prepare five hundred kāṣāyas to offer to Huixiang Monastery. When he awoke, he was astonished by this; he then begged among the people to make them until the number was reached. Suddenly one day, he met a monk who said, 'I will guide you into Huixiang Monastery.' Following him into the Zhongnan Mountains, he saw halfway up a cliff a lofty vermilion gate with a plaque reading 'Huixiang.' Hastening inside, he saw senior elders of the upper quarters, and the monks greeted and inquired after one another. Faxiu brought out the kāṣāyas and distributed them throughout the monastery. An elder led him into an empty chamber and said to him, 'This was the former chamber of the Tang Son of Heaven. Formerly, while dwelling here, he was fond of music and was demoted to become the ruler of the human realm; after a long time he shall return.' He instructed Faxiu, saying, 'Take this jade flute and the kāṣāya back and present them to the Tang Son of Heaven.' When Faxiu returned, he went to the palace and presented them in a memorial. The Emperor took the flute and played it, just as if it were an instrument he had used of old (Biographies of Eminent Monks).