摩訶止觀 8.104

8.104

六、方術治者：術事不知則遠，知之則近。如治咽法、如治齒法、如捻大指治肝等（云云）。術事淺近，體多貢幻，非出家人所須，元不須學，學須急棄。若修四三昧，泡脆之身損增無定，借用治病，身安道存，亦應無嫌。若用邀名射利、喧動時俗者，則是魔幻魔偽，急棄！急棄！

Sixth, curing by esoteric arts: the matters of esoteric arts seem distant when unknown, but near when known. Such are the method for treating the throat, the method for treating the teeth, the method of pinching the big toe to treat the liver, and so forth. Matters of esoteric arts are shallow and superficial, and their substance is mostly boastful and deceptive; they are not what a renunciant needs, fundamentally not needing to be learned, and if learned must be urgently discarded. However, if while practicing the four samādhis this bubble-like, fragile body suffers harm or growth unpredictably, borrowing them to cure illness so that the body is at peace and the Way preserved should also carry no blame. If one uses them to seek fame and fish for profit, causing a clamor among worldly people, then they are demonic illusions and demonic falsities: discard them urgently! Discard them urgently!