佛祖統紀 54.46

54.46

唐武后。有女人自稱聖菩薩。召見。時大安禪師至。問曰。聞汝善觀心。我心何在。三問皆驗。師復問之。女辭屈。變作牝狐。下階而走。

Under Empress Wu of the Tang, there was a woman who called herself a holy bodhisattva. She was summoned to an audience. At that time Chan Master Da'an arrived and asked her: "I hear that you are skilled at contemplating the mind. Where is my mind?" Three times he asked, and each was verified. The master asked her again; the woman's words failed her, and turning into a vixen, she ran down the steps.