praDAna
pradhāna ( nt. ; also, oftener, prahāṇa 1, q.v. ; see also prahita ; = Pali padhāna; n. act. to pradadhāti ), exertion : rūkṣa-pradhānaṃ prahitātmanaḥ LV 255.3 (prose), of (me) having exerted myself in harsh exertions ; rūkṣapradhānaprahitātmakatvāt LV 256.6 (prose); the Mv parallels to these passages read lūha-prahāṇa-, see these words; samyakpradhānā caturo me aśvā Mv iii.120.14 ( vs ), my horses are the four right exertions , for which see also (samyak)prahāṇa; cf. Pali sammappadhāna; the four (cited in Childers and PTSD ) are, exertion to prevent sinful states (dhamma = dharma) from arising, to get rid of those that exist, to produce good states, and to maintain those already existing; for BHS definitions (agreeing with this) see prahāṇa. In AbhidhK. LaV-P. vi.281 , Vyākhyā, four samyakpradhāna; the older Chin. rendering has effort , the later abandonment , as if ( Skt. ) prahāṇa; Tib. also the latter.