The Long Āgama Sūtra 24.15

24.15

「云何名觀察他心神足？於是，比丘現無量觀察神足，觀諸眾生心所念法，隈屏所為皆能識知。若有得信長者、居士，見比丘現無量觀察神足，觀他眾生心所念法，隈屏所為皆悉識知，便詣餘未得信長者、居士所，而告之曰：『我見比丘現無量觀察神足，觀他眾生心所念法，隈屏所為皆悉能知。』彼不信長者、居士，聞此語已，生毀謗言：『有乾陀羅呪能觀察他心，隈屏所為皆悉能知。』云何，長者子！此豈非毀謗言耶？」

“What’s called the miraculous ability of observing other minds? Here, a monk displays measureless miraculous abilities of observation, observing the thoughts in the minds of sentient beings and becoming aware of what they’ve done in private.

“Suppose a faithful prominent man or householder sees monks displaying measureless miraculous abilities of observation, observing the thoughts in the minds of sentient beings and becoming aware of what they’ve done in private. He would visit some other prominent men or householders who haven’t become believers and tell them, ‘I saw a monk display measureless miraculous abilities of observation, observing the thoughts in the minds of sentient beings and knowing what they had done in private.’ Those prominent men or householders who aren’t believers yet would produce this insult upon hearing that: ‘There’s the spell of Gandhārī that can observe other minds … and knowing what they’ve done in private.’

“How is it, prominent man’s son? Wouldn’t this be an insult?”