宗鏡錄 15.6

15.6

如昔有彭城王問諸大德等。貴若證果。即得成聖者。與我左腋出水。右腋出火。飛騰虛空。放光動地。我即禮拜汝為師。

For example, in the past King Pengcheng asked the various venerable elders: 'If you have realized the fruit and become sages, let water emerge from your left armpit and fire from your right armpit; fly up into empty space, radiate light, and shake the earth; then I will bow down and take you as my master.'