A Brahmin Paribbājaka asks the Buddha how far the Dhamma is sanditthiko, akāliko, ehipassiko, opanayiko, and paccattam veditabbo viññūhi. The Buddha explains. A.i.157f.
The Buddha visits the Paribbājakārāma on the banks of the Sappinikā and converses with a number of distinguished Paribbājakas - Annabhāra, Varadhara, Sakuludāyī and others. The Buddha tells them that there are four factors of Dhamma which no discerning recluse or brahmin can despise - not-coveting, not malice, right mindfulness, and right concentration. A.ii.31f.