[321] Bhikkhus, when there is no restraint of the senses (indriyasaṃvara), for one whose restraint of the senses has failed, virtue (sīla) has its proximate cause destroyed. When there is no virtue, for one whose virtue has failed, right concentration (sammāsamādhi) has its proximate cause destroyed. When there is no right concentration, for one whose right concentration has failed, knowledge and vision of things as they really are (yathābhūtañāṇadassana) has its proximate cause destroyed. When there is no knowledge and vision of things as they really are, for one whose knowledge and vision of things as they really are has failed, disenchantment and dispassion (nibbidāvirāga) have their proximate cause destroyed. When there is no disenchantment and dispassion, for one whose disenchantment and dispassion have failed, knowledge and vision of liberation (vimuttiñāṇadassana) has its proximate cause destroyed. Suppose, bhikkhus, there were a tree deficient in branches and foliage: its shoots do not grow to fullness, its bark does not grow to fullness, its softwood does not grow to fullness, and its heartwood does not grow to fullness. In just the same way, bhikkhus, when there is no restraint of the senses, for one whose restraint of the senses has failed, virtue has its proximate cause destroyed … knowledge and vision of liberation.
Bhikkhus, when there is restraint of the senses, for one accomplished in restraint of the senses, virtue is endowed with its supporting condition. When there is virtue, for one accomplished in virtue, right concentration is endowed with its supporting condition. When there is right concentration, for one accomplished in right concentration, knowledge and vision of things as they really are is endowed with its supporting condition. When there is knowledge and vision of things as they really are, for one accomplished in knowledge and vision of things as they really are, disenchantment and dispassion are endowed with their supporting condition. When there is disenchantment and dispassion, for one accomplished in disenchantment and dispassion, knowledge and vision of liberation is endowed with its supporting condition. Suppose, bhikkhus, there were a tree accomplished in branches and foliage: its shoots grow to fullness, its bark grows to fullness, its softwood grows to fullness, and its heartwood grows to fullness. In just the same way, bhikkhus, when there is restraint of the senses, for one accomplished in restraint of the senses … knowledge and vision of liberation is endowed with its supporting condition.
English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.