大唐西域記 8.63

8.63

菩提樹垣東門外二三里，有盲龍室。此龍者，殃累宿積，報受生盲。如來自前正覺山欲趣菩提樹，途次室側，龍眼忽明，乃見菩薩將趣佛樹，謂菩薩曰：「仁今不久當成正覺。我眼盲冥，于茲已久，有佛興世，我眼輒明。賢劫之中，過去三佛出興世時，已得明視。仁今至此，我眼忽開，以故知之，當成佛矣。」

Outside the eastern gate of the wall of the Bodhi tree, 2 or 3 li distant, there is the house of the blind Naga. This Naga, by the accumulated effect of his deeds during former existences, was born blind, as a punishment, in his present birth. Tathagata going on from Mount Pragbodhi, desired to reach the Bodhi tree. As he passed this abode, the eyes of the Naga were suddenly opened, and he saw Bodhisattva going on to the tree of intelligence (Bodhi). Then addressing Bodhisattva, he said, "O virtuous master! erelong you will become perfectly enlightened! My eyes indeed have long remained in darkness; but when a Buddha appears in the world, then I have my sight restored. During the Bhadra-kalpa, when the three past Buddhas appeared in the world, then I obtained light and saw (for a while); and now when thou, O virtuous one! didst approach this spot, my eyes suddenly opened; therefore I know that you shall become a Buddha."