On Yuan Chwang's Travels in India, 629–645 A.D. v1.c6.s2.18

v1.c6.s2.18

The pilgrim's description proceeds to relate that in the eastern part of Kuchih was a large Dragon-Tank in front of a Deva-Temple to the north of a city. The dragons of this tank changed themselves into horses and then coupled with mares: the offspring of this union was a fierce intractable breed, but the next generation formed fine horses patient of harness, and of these there were very many. Local tradition told of a king in recent times named Gold-Flower who by his regal ordinances and judicial impartiality moved the dragons to become his vehicles, and when he wanted to die he touched the dragon's ears with a whip, whereupon he sank out of sight with them to the present time. There were no wells in the city and the people drew water from the Tank: the dragons now changed themselves into men and had intercourse with the women: the offspring of this union became daring and fleet as horses, and all the inhabitants gradually came to have a mixture of the dragon in them; trusting to their might they made themselves feared, and came to slight the king's commands, whereupon the king brought in the Turks who slew all the living creatures in the city, and this was now a jungle without human inhabitants.