大唐西域記 4.62

4.62

聖迹垣內，靈異相繼。其大窣堵波東南有一池龍，恒護聖迹。既有冥衛，難以輕犯，歲久自壞，人莫能毀。

At this time Utpalavarna bhikshuni, being anxious to be the first to see Buddha, was changed into a Chakravartin monarch, with the seven gems (ratnani) accompanying her, and with the four kinds of troops to escort and defend her. Coming to the place where the lord of the world was, she reassumed her form as a bhikshuni, on which Tathagata addressed her and said: "You are not the first to see me! Subhuti (Chen-hien), comprehending the emptiness of all things, he has beheld my spiritual body (dharmakaya)." Within the precinct of the sacred traces miracles are constantly exhibited. To the south-east of the great stupa is a Naga tank. He defends the sacred traces with care, and being thus spiritually protected, one cannot regard them lightly. Fire may effect their destruction, but no human power can do so. Going north-west from this less than 200 li, we come to the kingdom of Kie-po-kio-she (Kanyakubja).