法苑珠林 82.76

82.76

又書云。己所不欲勿施於人。當知內外之教其本均同。雖形有黑白。然立行無殊。若乖斯旨便同鄙俗何依內外。如經云。佛為眾生說法斷除無明暗惑。猶若良醫隨疾授藥。是名內教。

A secular book also says: 'What you do not desire for yourself, do not do to others.' One should know that the inner and outer teachings are fundamentally the same at root. Although their external forms differ between black and white, their establishment of practice is without difference. If one goes against this principle, one becomes identical to the vulgar, so how can one follow either the inner or outer? As a sūtra says: 'The Buddha expounds the Dharma for sentient beings to sever ignorance and delusion, just like a skilled physician dispensing medicine according to the disease.' This is called the inner teaching.