摩訶止觀 9.60

9.60

所言「內有色外觀色」者，不破不壞內色，內觀白骨、皮肉，而外觀死屍等。若修相，具如《禪門》。今略示發相。行者忽見自身足指，皮𥀹如泡，漸漸至膞、至腰，通身到頂。斯須洪直，舉身脹急，五指葩花，兩脚如柱，腰腹如甕，頭如盆，處處臚脹，如風滿韋囊。此相發時，或從脚至頂，或從頂至脚，滿一繩床，皮急肉裂，將欲綻潰。既潰膿流，浸漬濕釋。又從頂至足，皮肉自脫，唯白骨在；支節相柱，𣫝然不動。皮肉墮落聚在一處，猶如蟲聚污穢鄙醜。若發此相，深患其身，厭之如糞，何況妻子、財寶而生悋惜？

Regarding "having internal form, one observes external form": without destroying or rupturing internal form, one internally contemplates white bones, skin, and flesh, and externally contemplates corpses and the like. The marks of cultivation are fully explained in the Chanmen. Here we briefly show the marks of manifestation. The practitioner suddenly sees the toes of his own feet with skin swelling like bubbles, gradually reaching the calves, the waist, and throughout the body to the crown of the head. In an instant it becomes swollen and rigid; the entire body is distended and tight, the five toes splayed, both legs like pillars, the waist and belly like a jar, the head like a basin, bloated everywhere like a leather bag filled with wind. When this mark manifests, it moves either from the feet to the crown or from the crown to the feet, filling the whole rope-bed; the skin is tight and the flesh cracked, on the verge of bursting. Once burst, pus flows out, soaking, wetting, and dissolving. Then from crown to feet, the skin and flesh spontaneously slough off, leaving only the white bones; the joints support one another, standing immovably firm. The fallen skin and flesh gather in one place, like a heap of worms, filthy, vile, and repulsive. When this mark manifests, one deeply loathes one's body, abhorring it like feces; how much less would one give rise to stingy attachment toward wife, children, wealth, and treasures?