治禪病祕要法 2.73

2.73

The Buddha said to Ānanda: "You must carefully uphold this method of purifying body, speech, and mind, subduing comportment, and expelling evil ghosts. For the sake of enabling the disciples of the four divisions to grow—causing them not to give rise to distracted thoughts and to attain entry into samādhi—you should properly receive and uphold it; be careful not to forget or lose it."