Hetu

Nīvaraṇañceva nīvaraṇasampayuttañca akusalaṃ dhammaṃ paṭicca nīvaraṇo ceva nīvaraṇasampayutto ca akusalo dhammo uppajjati hetupaccayā. (Saṃkhittaṃ.)

Hetuyā nava, ārammaṇe nava…pe…  avigate nava. (Saṃkhittaṃ.)