Majjhima Nikaya (Coleção dos Discursos Médios) 2:12
SUJATOdhammesu dhammānupassī viharati ātāpī sampajāno satimā, vineyya loke abhijjhādomanassaṁ.
They meditate observing an aspect of principles—keen, aware, and mindful, rid of covetousness and displeasure for the world.