“Bhante nāgasena, aṭṭhahi kāraṇehi buddhi pariṇamati paripākaṃ gacchati. Katamehi aṭṭhahi? Vayapariṇāmena buddhi pariṇamati paripākaṃ gacchati, yasapariṇāmena buddhi pariṇamati paripākaṃ gacchati, paripucchāya buddhi pariṇamati paripākaṃ gacchati, tittha­saṃ­vā­sena buddhi pariṇamati paripākaṃ gacchati, yoniso manasikārena buddhi pariṇamati paripākaṃ gacchati, sākacchāya buddhi pariṇamati paripākaṃ gacchati, snehūpa­seva­nena buddhi pariṇamati paripākaṃ gacchati, pati­rūpa­desa­vāsena buddhi pariṇamati paripākaṃ gacchati. Bhavatīha—

‘Vayena yasapucchāhi,
titthavāsena yoniso;
Sākacchā snehasaṃsevā,
patirūpavasena ca.

Etāni aṭṭha ṭhānāni,
buddhi­visada­kāraṇā;
Yesaṃ etāni sambhonti,
tesaṃ buddhi pabhijjatī’”ti.

Aṭṭha paññā­paṭi­lābha­kāraṇāni.