[277] Furthermore, bhikkhus, a bhikkhu reflects (paccavekkhati) on this very body — upward from the soles of the feet, downward from the tips of the hairs of the head, bounded by skin, and full of many kinds of impurity — thus: "There are in this body head hairs, body hairs, nails, teeth, skin, flesh, sinews, bones, bone marrow, kidneys, heart, liver, pleura, spleen, lungs, intestines, mesentery, stomach contents, feces, bile, phlegm, pus, blood, sweat, fat, tears, grease, saliva, snot, synovial fluid, urine."
Just as if, bhikkhus, there were a bag with openings at both ends, full of various kinds of grain — namely, hill rice, paddy rice, mung beans, beans (māsa), sesame seeds, and husked rice — and a man with good eyes, having opened it, were to reflect: "This is hill rice, this is paddy rice, these are mung beans, these are beans, these are sesame seeds, this is husked rice"; even so, bhikkhus, a bhikkhu reflects on this very body — upward from the soles of the feet, downward from the tips of the hairs of the head, bounded by skin, and full of many kinds of impurity — thus: "There are in this body head hairs, body hairs, nails, teeth, skin, flesh, sinews, bones, bone marrow, kidneys, heart, liver, pleura, spleen, lungs, intestines, mesentery, stomach contents, feces, bile, phlegm, pus, blood, sweat, fat, tears, grease, saliva, snot, synovial fluid, urine."
Thus he dwells contemplating the body in the body (kāyānupassanā) internally, or he dwells contemplating the body in the body externally, or he dwells contemplating the body in the body both internally and externally. He dwells contemplating in the body the nature of origination (samudaya), or he dwells contemplating in the body the nature of vanishing, or he dwells contemplating in the body the nature of both origination and vanishing. Or else his mindfulness (sati) that "there is a body" is established just to the extent necessary for knowledge (ñāṇa) and continued mindfulness. And he dwells independent, not clinging to anything in the world. Thus too, bhikkhus, a bhikkhu dwells contemplating the body in the body.
The section on reflection on repulsiveness (paṭikūlamanasikāra) is concluded.
English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.