Aggavaá¹Âsa of Arimaddana (modern Bagan, Burma) was the author of the Saddanëti, a grammar of the PÃÂli language, specifically the text of the Buddhist scriptures, the Tipiá¹Âaka. The work was completed in 1154, CE and was taken to Laá¹ ka (Ceylon) a few years after its completion.
It can be seen as a descriptive grammatical work. It consists of 28 chapters with the first 19 being entitled MahÃÂsaddanëti (The Greater Guidance of Sadda) and the remaining 9 chapters being called Cullasaddanëti (The Lesser Guidance of Sadda).The MahÃÂsaddanëti is in two sections: the PadamÃÂlÃÂ(1-14)that deals with morphological and syntactic patterns of PÃÂli and the DhÃÂtumÃÂlÃÂ(1-14)that gives a full lexicographical account of PÃÂli roots in eight gaá¹Âas. The Cullasaddanëti is tantamount to the SuttamÃÂlÃÂ. It is made up of 1347 suttas accompanying an additional chapter on upasaggas and nipÃÂtas .