sn36.31:9.2 Yā kho, bhikkhave, khīṇāsavassa bhikkhuno rāgā cittaṁ vimuttaṁ paccavekkhato, dosā cittaṁ vimuttaṁ paccavekkhato, mohā cittaṁ vimuttaṁ paccavekkhato uppajjati upekkhā, ayaṁ vuccati, bhikkhave, nirāmisā nirāmisatarā upekkhā.