The Aṅguttara Nikāya (aṅguttaranikāya; lit. 'Increased-by-One Collection', also translated "Gradual Collection" or "Numerical Discourses") is a Buddhist scriptures collection, the fourth of the five Nikāyas, or collections, in the Sutta Piṭaka, which is one of the "three baskets" that comprise the Pāli Tipiṭaka of Theravāda Buddhism. This nikāya consists of several thousand discourses ascribed to the Buddha and his chief disciples arranged in eleven "books", according to the number of Dhamma items referenced in them.