Satipaṭṭhānasutta
“Rāgassa, bhikkhave, abhiññāya cattāro dhammā bhāvetabbā. Katame cattāro? Idha, bhikkhave, bhikkhu kāye kāyānupassī viharati ātāpī sampajāno satimā vineyya loke abhijjhādomanassaṁ; vedanāsu …pe… citte …pe… dhammesu dhammānupassī viharati ātāpī sampajāno satimā vineyya loke abhijjhādomanassaṁ. Rāgassa, bhikkhave, abhiññāya ime cattāro dhammā bhāvetabbā”ti.
Mindfulness Meditation
“For insight into greed, four things should be developed. What four? Firstly, a mendicant meditates by observing an aspect of the body—keen, aware, and mindful, rid of covetousness and displeasure for the world. They meditate observing an aspect of feelings … mind … principles—keen, aware, and mindful, rid of covetousness and displeasure for the world. For insight into greed, these four things should be developed.”