According to the Theravādin account, this council was convened primarily for the purpose of establishing an official orthodoxy. At the council, small groups raised questions about the specifics of the "vinaya" and the interpretation of doctrine. The chairman of the council, Moggaliputta Tissa, compiled a book, the "Kathavatthu", which was meant to refute these arguments. The council sided with Moggaliputta and his version of Buddhism as orthodox; it was then adopted by Emperor Aśoka as his empire's official religion. In Pali, this school of thought was termed Vibhajjavāda, literally "thesis of who make a distinction".