高僧傳 9.8

9.8

襄國城塹水源在城西北五里團丸祀下，其水暴竭。勒問澄何以致水。澄曰：「今當勅龍。」勒字世龍，謂澄嘲己，答曰：「正以龍不能致水，故相問耳。」澄曰：「此誠言，非戲也。水泉之源，必有神龍居之。今往勅語，水必可得。」迺與弟子法首等數人至泉源上。其源故處，久已乾燥，坼如車轍。從者心疑，恐水難得。澄坐繩床，燒安息香，呪願數百言，如此三日，水泫然微流。有一小龍長五六寸許，隨水來出。諸道士見競往視之，澄曰：「龍有毒，勿臨其上。」有頃，水大至，隍塹皆滿。

The water source of the moat of the city of Xiangguo lay five li northwest of the city, beneath the Tuanwan shrine; its water suddenly dried up. Le asked Deng how water could be brought. Deng said: 'Now we must command the dragon.' Le's style name was Shilong ('Generational Dragon'); thinking Deng was mocking him, he replied: 'It is precisely because the dragon cannot bring water that I am asking you.' Deng said: 'These are sincere words, not a jest. At the source of the spring, there must be a divine dragon dwelling. If we go now and command it, water can certainly be obtained.' He then went to the spring source with several disciples, including Fashou. The old site of the source had long been dry, cracked like carriage ruts. His followers harbored doubts, fearing that water would be difficult to obtain. Deng sat on a rope bed, burned benzoin incense, and made praṇidhānas of several hundred words. After three days of this, water began to trickle gently. A small dragon, about five or six inches long, emerged following the water. When the various Daoist masters saw it, they vied to go and look at it. Deng said: 'The dragon is venomous; do not go near it.' After a short while, a great rush of water arrived, and the moats and ditches were completely filled.