Sāsana: lit. 'message': the Dispensation of the Buddha, the Buddhist religion; teaching, doctrine.
navanga-Buddha or satthu-sāsana the ninefold Dispensation of the Buddha or the Master consists of suttas sutta mixed prose geyya exegesis veyyākarana verses gāthā solemn utterances udāna sayings of the Blessed One itivuttaka birth stories jātaka extraordinary things abbhutadhamma and analysis vedalla This classification is often found in the suttas e.g. M. 22. According to the commentaries, also the Vinaya and the Abhidhamma Pitaka are comprised in that ninefold division see Atthasālini Tr., I, 33. It is a classification according to literary styles, and not according to given texts or books.
Maha Thera Nyanatiloka. Manual of Buddhist Terms and Doctrines, Buddhist Publication Society, first edition 1952.