長阿含經 6.p3

6.p3

“Here, a monk observes the internal body as body diligently and without negligence. His attention to it isn’t lost, and he removes worldly craving and sorrow. He observes the external body as body … observes internal and external body as body diligently and without negligence. His attention to it isn’t lost, and he removes worldly craving and sorrow. He likewise observes feeling, mind, and principles.