10. “Again, bhikkhus, a bhikkhu reviews this same body up from the soles of the feet and down from the top of the hair, bounded by skin, as full of many kinds of impurity thus: ‘In this body there are head-hairs, body-hairs, nails, teeth, skin, flesh, sinews, bones, bone-marrow, kidneys, heart, liver, diaphragm, spleen, lungs, large intestines, small intestines, contents of the stomach, feces, bile, phlegm, pus, blood, sweat, fat, tears, grease, spittle, snot, oil of the joints, and urine.’
Just as though there were a bag with an opening at both ends full of many sorts of grain, such as hill rice, red rice, beans, peas, millet, and white rice, and a man with good eyes were to open it and review it thus:
‘This is hill rice, this is red rice, these are beans, these are peas, this is millet, this is white rice’; so too, a bhikkhu reviews this same body … as full of many kinds of impurity thus: ‘In this body there are head-hairs … and urine.’
11. “In this way he abides contemplating the body as a body internally, externally, and both internally and externally … And he abides independent, not clinging to anything in the world. That too is how a bhikkhu abides contemplating the body as a body.