Abhidhammāvatāra
According to Rupert Gethin , the Abhidhammāvatāra ( ‘Introduction to Abhidharma’ ) was "written in the fifth century by Buddhadatta , a contemporary of Buddhaghosa . " Buddhadatta was a poet and scholar in the region of the Kaveri River , in southern India" . 
<triplet> Abhidhammāvatāra <subj> Buddhadatta <obj> author