Āgantukasutta
“Seyyathāpi, bhikkhave, āgantukāgāraṁ. Tattha puratthimāyapi disāya āgantvā vāsaṁ kappenti, pacchimāyapi disāya āgantvā vāsaṁ kappenti, uttarāyapi disāya āgantvā vāsaṁ kappenti, dakkhiṇāyapi disāya āgantvā vāsaṁ kappenti, khattiyāpi āgantvā vāsaṁ kappenti, brāhmaṇāpi āgantvā vāsaṁ kappenti, vessāpi āgantvā vāsaṁ kappenti, suddāpi āgantvā vāsaṁ kappenti; evameva kho, bhikkhave, bhikkhu ariyaṁ aṭṭhaṅgikaṁ maggaṁ bhāvento ariyaṁ aṭṭhaṅgikaṁ maggaṁ bahulīkaronto ye dhammā abhiññā pariññeyyā, te dhamme abhiññā parijānāti …pe… ye dhammā abhiññā pahātabbā, te dhamme abhiññā pajahati, ye dhammā abhiññā sacchikātabbā, te dhamme abhiññā sacchikaroti, ye dhammā abhiññā bhāvetabbā, te dhamme abhiññā bhāveti.
A Guest House
“Mendicants, suppose there was a guest house. Lodgers come from the east, west, north, and south. Aristocrats, brahmins, peasants, and menials all stay there. In the same way, a mendicant who develops and cultivates the noble eightfold path completely understands by direct knowledge the things that should be completely understood by direct knowledge. They give up by direct knowledge the things that should be given up by direct knowledge. They realize by direct knowledge the things that should be realized by direct knowledge. They develop by direct knowledge the things that should be developed by direct knowledge.