法苑珠林 67.5

67.5

又正法念經云。比丘修行者。如實見身。從頭至足循身觀察。彼以聞慧。或以天眼。觀髑髏內。自有蟲行。名曰腦行。游行骨內生於腦中。或行或住。常食此腦。復有諸蟲住髑髏中。若行若食還食髑髏。復有髮蟲住於骨外食於髮根。以蟲瞋故令髮墮落。復有耳蟲住在耳中食耳中肉。以蟲瞋故令人耳痛。或令耳聾。復有鼻蟲住在鼻中。食鼻中肉。以蟲瞋故能令其人飲食不美腦涎流下。以蟲食腦涎。是故令人飲食不美。復有脂蟲生在脂中。住於脂中。常食人脂。以蟲瞋故令人頭痛。復有續蟲生於節間。有名身蟲住在人牙。以蟲瞋故令人脈痛。猶如鍼刺。復有諸蟲名曰食涎。住舌根中。以蟲瞋故令人口燥。復有諸蟲名牙根蟲。住於牙根。以蟲瞋故令人牙痛。復有諸蟲名歐吐蟲。以食違多生歐吐。是名內修行者循身觀。是十種蟲住於頭中。或以聞慧。或以天眼。初觀咽喉。有蟲名曰食涎。齟嚼食時猶如歐吐涎唾和雜。欲咽之時與腦涎合。喉中涎蟲共食此食以自活命。若蟲增長令人嗽病。若多食膩。或食甜。或食熏食。或食酢食。或食冷食。蟲則增長。令人咽喉生於病疾。復以聞慧。或以天眼見消唾蟲注咽喉中。若人不食如上膩等。蟲則安隱能消於唾。於十脈中流出美味安隱受樂。若人多唾蟲則得病。以蟲病故則吐冷沫。吐冷沫故胸中成病。復以聞慧。或以天眼。觀於吐蟲住人身中。住於十脈流注之處。若人食時。如是之蟲。從十脈中踊身上行。至咽喉中即令人吐。生於五種嘔吐。一風吐。二癊吐。三唾吐。四雜吐。五蠅吐。若蟲安隱則於胃中順入腹中。

Furthermore, the Zhengfa nian jing says: 'When a monk-practitioner sees the body as it truly is, observing the body from head to foot, by means of wisdom born of hearing or by means of the divine eye he observes inside the skull that there are worms moving about, named "brain-crawlers". Roaming through the bones, they are born within the brain; moving or resting, they constantly feed on this brain. There are also worms residing in the skull: whether moving or feeding, they feed on the skull. There are also hair-worms residing outside the bone, feeding on the roots of the hair; when these worms become angry, they cause the hair to fall out. There are also ear-worms residing in the ears, feeding on the flesh inside the ears; when these worms become angry, they cause ear pain or cause deafness. There are also nose-worms residing in the nose, feeding on the flesh inside the nose; when these worms become angry, they make one's food and drink unpalatable and cause brain-saliva to drip down—because the worms consume the brain-saliva, food and drink are therefore unpalatable. There are also fat-worms born within the fat, residing within the fat, constantly feeding on the person's fat; when these worms become angry, they cause headaches. There are also joint-worms born between the joints. There are worms named "body-worms" residing in human teeth; when these worms become angry, they cause pain in the vessels like the piercing of needles. There are also worms named "saliva-eaters", residing in the root of the tongue; when these worms become angry, they cause the mouth to become parched. There are also worms named "tooth-root worms", residing in the roots of the teeth; when these worms become angry, they cause toothaches. There are also worms named "vomit worms"; when food is discordant, they produce excessive vomiting. This is called the inner practitioner's contemplation of the body. These ten kinds of worms reside in the head. Either through wisdom born of hearing or through the divine eye, when first observing the throat, there are worms named "saliva-eaters": when chewing food, as if mixed with vomited saliva, when about to swallow it joins with the brain-saliva; the saliva-worms in the throat feed together on this food to sustain their lives. If these worms multiply, they cause coughing illnesses. If one eats excessive grease, or eats sweets, or eats smoked food, or eats sour food, or eats cold food, the worms will multiply, causing diseases to arise in the person's throat. Furthermore, by wisdom born of hearing or by the divine eye, one sees saliva-digesting worms flowing into the throat; if a person does not eat the aforementioned greases and the like, the worms remain at peace and can digest the saliva, causing delicious flavours to flow out from the ten channels, experiencing peaceful pleasure. If a person produces excessive saliva, the worms become ill; because the worms are ill, they vomit cold foam, and because cold foam is vomited, illness develops in the chest. Furthermore, by wisdom born of hearing or by the divine eye, one contemplates vomit worms residing in the human body, dwelling where the ten channels flow; when a person eats, such worms surge upward through the body from the ten channels, and upon reaching the throat they immediately cause the person to vomit, producing five kinds of vomiting: first, wind vomiting; second, phlegm vomiting; third, saliva vomiting; fourth, mixed vomiting; fifth, fly vomiting. If the worms are at peace, then they proceed smoothly from the stomach into the abdomen.'