Samyuktagama (Sanskrit fragments) 389.5

389.5

「如來、應、等正覺為大醫王，成就四德，療眾生病，亦復如是。云何為四？謂如來知此是苦聖諦如實知、此是苦集聖諦如實知、此是苦滅聖諦如實知、此是苦滅道跡聖諦如實知。諸比丘！彼世間良醫於生根本對治不如實知，老、病、死、憂、悲、惱、苦根本對治不如實知，如來、應、等正覺為大醫王，於生根本對治如實知，於老、病、死、憂、悲、惱、苦根本對治如實知，是故如來、應、等正覺名大醫王。」

“The Tathāgata, the Arhat, the Completely Awakened One is the great king of doctors. He achieved these four virtues to heal the illness of sentient beings in the same way. What are the four? The Tathāgata knows ‘this is the noble truth of suffering,’ and he truly knows it … ‘this is the noble truth of suffering’s formation,’ and he truly knows it … ‘this is the noble truth of suffering’s cessation,’ and he truly knows it … ‘this is the noble truth of the path to suffering’s cessation,’ and he truly knows it.

“Monks, that worldly good doctor doesn’t truly know the treatment for the root of birth … doesn’t truly know the treatment for the root of old age, illness, death, sorrow, lamentation, trouble, and pain. The Tathāgata, Arhat, and Completely Awakened One is the great king of doctors who truly knows the treatment for the root of birth … truly knows the treatment for the root of old age, illness, death, sorrow, lamentation, trouble, and pain. Therefore, the Tathāgata, Arhat, and Completely Awakened One is called the great king of doctors.”