On Yuan Chwang's Travels in India, 629–645 A.D. v2.c19.169

v2.c19.169

The pilgrim proceeds to relate that two or three *li* outside of the east gate of the Bodhi Tree inclosure was the home of the Blind dragon. As the result of bad karma in former births, he states, this dragon had been born blind. When Julai on his way from the Prāgbodhi Hill to the Bodhi Tree was passing the dragon's cave, the dragon suddenly obtained eyesight and predicted to the P'usa the attainment of Buddhahood that day. He explained that when the three Past Buddhas in succession began their careers he had been released from blindness on each occasion, and so the present opening of his eyes told him that the P'usa was about to become Buddha.