修習止觀坐禪法要 1.157

1.157

如是四大五藏病患，因起非一，病相眾多，不可具說。行者若欲修止觀法門，脫有患生，應當善知因起。此二種病，通因內外發動。若外傷寒冷風熱，飲食不消，而病從二處發者，當知因外發動。若由用心不調，觀行違僻，或因定法發時，不知取與，而致此二處患生，此因內發病相。

Such afflictions of the four great elements and five internal organs arise from causes that are manifold, and their symptoms are numerous, impossible to state in full. If a practitioner wishes to cultivate the dharma-door of calming and contemplation and an affliction should happen to arise, they should know well how it arose. These two kinds of illnesses are generally triggered by internal and external causes. If externally harmed by cold, wind, or heat, or food is not digested, and the illness arises from these two places, know that it was triggered by external causes. If caused by disharmony in applying the mind, contemplation practice going awry, or when the dharma of concentration arises one does not know how to grasp or relinquish, bringing about afflictions in these two places, these are the marks of illness triggered by internal causes.