法苑珠林 67.27

67.27

Fifth, there are also sentient beings who stammer, are mute, and cannot speak with their mouths. If they wish to say something, they close their eyes and raise their hands, yet their words remain unintelligible. What transgression caused this? The Buddha said: In their past lives, due to slandering the Three Honoured Ones, disparaging the holy path, discussing the faults of others, seeking out other people's defects, falsely accusing the good and virtuous, and hating and envying the worthy, they incurred this retribution.