A Pāli grammar belonging to the Moggallāna school, by Piyadassī.
Vanaratana Ananda wrote a Singhalese paraphrase on it, and there also exists a Tīkā on it called the Buddhippasādanī.
The book is also called Moggallānasaddattharatnakāra. P.L.C. 201, 205.