Kusalarāsisutta
“‘Kusalarāsī’ti, bhikkhave, vadamāno cattāro satipaṭṭhāne sammā vadamāno vadeyya. Kevalo hāyaṁ, bhikkhave, kusalarāsi, yadidaṁ—cattāro satipaṭṭhānā.
A Heap of the Skillful
“Rightly speaking, mendicants, you’d call these four kinds of mindfulness meditation a ‘heap of the skillful’. For these four kinds of mindfulness meditation are entirely a heap of the skillful.