高僧傳 10.68

10.68

天監五年冬旱，雩祭備至，而未降雨。誌忽上啟云：「誌病不差，就官乞治。若不啟百，官應得鞭杖。願於華光殿講《勝鬘》請雨。」上即使沙門法雲講《勝鬘》，講竟，夜便大雪。誌又云：「須一盆水，加刀其上。」俄而雨大降，高下皆足。

In the winter of the fifth year of Tianjian, there was a drought; the rain-sacrifice rituals were completely performed, yet no rain fell. Zhi suddenly submitted a petition: 'Zhi's illness has not abated, and he asks the authorities to treat it. If this is not reported to the hundreds of officials, they deserve the whip and rod. I wish to lecture on the Śrīmālādevī-sūtra in the Huaguang Hall to pray for rain.' The Emperor immediately ordered the śramaṇa Fayun to lecture on the Śrīmālādevī-sūtra; when the lecture finished, heavy snow fell that night. Zhi further said: 'A basin of water is needed, with a knife laid across it.' Shortly afterward, rain poured down heavily, plentiful in both high lands and low.