The "three baskets" (Tripitaka in Sanskrit, Tipitaka in Pali), the earliest collection of Buddhist scriptures, compiled at the Buddhist councils and recording the teachings of the Buddha.
The three-fold division (Vinaya-discipline, Sutta-discourses, Abhidhamma-philosophy), the Pali medium, and the completion of the Abhidhamma at Ashoka's third council are recurring objective points.
The Sutta Pitaka (discourses, Ananda) is distinct from the Vinaya Pitaka (rules, Upali); the Abhidhamma was the last to be added (third council, Ashoka), so the full Tripitaka was not complete at the first council.
Three baskets in Pali: Vinaya (discipline), Sutta (discourses), Abhidhamma (philosophy), the latter added under Ashoka.