[303] Again, bhikkhus, quite secluded from sensual pleasures, secluded from unwholesome states, a bhikkhu enters upon and dwells in the first meditative absorption (jhāna), which is accompanied by thought (vitakka) and examination (vicāra), with rapture and pleasure born of seclusion. He drenches, steeps, fills, and pervades this very body with the rapture and pleasure born of seclusion, so that there is no part of his whole body that is unpervaded by the rapture and pleasure born of seclusion. Just as, bhikkhus, a skilled bath attendant or a bath attendant's apprentice, having heaped bath powder into a bronze dish and sprinkling it gradually with water, would knead it, so that that ball of bath powder, taken up by moisture, pervaded by moisture, is suffused with moisture within and without, yet does not ooze — even so, bhikkhus, a bhikkhu drenches, steeps, fills, and pervades this very body with the rapture and pleasure born of seclusion, so that there is no part of his whole body that is unpervaded by the rapture and pleasure born of seclusion. As he dwells thus diligent … Thus too, bhikkhus, a bhikkhu develops mindfulness directed to the body (kāyagatā sati).
English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.