Atthakatha
Aṭṭhakathā (Pali for explanation, commentary) refers to Pali-language Theravadin Buddhist commentaries to the canonical Theravadin Tipitaka. These commentaries give the traditional interpretations of the scriptures. The major commentaries were based on earlier ones, now lost, in Pakrit, which were written down at the same time as the Canon, in the last century BCE. Some material in the commentaries is found in canonical texts of other schools of Buddhism, suggesting an early common source.
As with the Canon itself, the contents of collected editions of the Theravadin commentaries, compiled from the fourth century CE onwards, vary between editions. The minimal collection, found in the Thai edition (1992) includes the following (Skilling 2002).
Twelve commentaries ascribed to Buddhaghosa: commentary on the Vinaya Pitaka; one each on the Digha Nikaya, Majjhima Nikaya, Samyutta Nikaya and Anguttara Nikaya; four on Khuddaka Nikaya books; and three on the Abhidhamma Pitaka.
Commentaries by Dhammapala on seven books of the Khuddaka Nikaya.