Majjhima Nikaya (Coleção dos Discursos Médios) 3:82
SUJATOkāye kāyānupassī, bhikkhave, tasmiṁ samaye bhikkhu viharati ātāpī sampajāno satimā vineyya loke abhijjhādomanassaṁ.
at that time they’re meditating by observing an aspect of the body—keen, aware, and mindful, rid of covetousness and displeasure for the world.