『小部』第十二経典で、阿羅漢がいかにして無礙解智を得るかを三章にわたり阿毘達磨的に分析した論書であり、『正法顕揚』という注釈書を伴う。

The twelfth book of the Khuddakanikāya, an Abhidhamma-style analytical treatise in three chapters on how an Arahant acquires discriminating knowledge, with a commentary called the Saddhammappakāsinī.