Aṭṭhakavagga.– The fourth division of the Suttanipāta. It consists of sixteen suttas, all of which are explained in the Mahā Niddesa. It may also have been the name of divisions of other books, because we are told that once Soṇa Thera intoned before the Buddha all the verses of the Books of the Eights (Aṭṭhakavaggikāni). Vin.i.196‑7. The DhA. (iv.101‑2) says he recited the 16 portions of the Aṭṭhakavagga.
Veḷukaṇḍakī Nandamātā was once reciting the Aṭṭhakavagga and the Parāyanavagga on the roof of her house, and Vessavaṇa, while on the way with his followers to see the Buddha, listened to her recital (SnA.i.370; but see A.iv.63, where only the Parāyana is mentioned). According to this tradition, the Aṭṭhakavagga was already being recited in the Buddha’s own time.
In Sanskrit the title was known as Artha-
Aṭṭhaka Sutta.– Two of the same name. They deal with the methods of mastering the feelings, of bringing about their cessation and of the six ways of calming them. S.iv.221 f.