pārisuddhipadhāniyaṅga: the 4 'elements of the effort for purity', are: effort for purity of morality (sīla-parisuddhi-padhāniyaṅga), for purity of mind (citta), of view (diṭṭhi), of deliverance (vimutti). Cf. A. IV, 194. - Another 9 factors are enumerated in D. 34, namely the 7 'stages of purification (s. visuddhi) and the effort for purity of (higher) knowledge (vijjā-p.-p.) and of deliverance (vimutti-p.-p.).

Buddhist Dictionary, Manual of Buddhist Terms and Doctrines, by NYANATILOKA MAHATHERA