NAMO SAKYAMUNI BUDDHA
The Abhidhamma Pitaka is the most important and most interesting of the three, containing as it does the profound philosophy of the Buddha’s teaching in contrast to the simpler discourses in the Sutta Pitaka. Abhidhamma, the higher doctrine of the Buddha, expounds the quintessence of his profound teachings. According to some scholars, Abhidhamma is not a teaching of the Buddha, but is later elaboration of scholastic monks. Tradition, however, attributes the nucleus of the Abhidhamma to the Buddha himself. The Matika or Matrices of the Abhidhamma such as wholesome states (kusala dhamma), unwholesome states (akusala dhamma), and indeterminate states (abhyakata dhamma), etc., which have been elaborated in the six books, except the Kathavatthu, were expounded by the Buddha
Venerable Sariputta was assigned the honour of having explained all these topics in detail
The Sastra consists of seven books:
+ Dhammasanghani (p)—Classification od Dhamma.
+ Vibhanga (p)—Divisions.
+ Dhatukatha (p)—Discourses of Elements.
+ Puggala Pannatti (p)—The Book on Individuals.
+ Kathavathu (p)—Points of Controversy.
+ Yamaka (p)—The Bok of Pairs.
+ Patthana (p)—The Bok of Causal Relations.
Source (Vietnamese): http://daitangkinhvietnam.org/
Translated to English by TTLL (Thanh Tịnh Lưu Ly)