経集の大品第十二経で、満月の夜に仏陀が説き、苦とその起源、および苦の滅とそれに至る道という二種の観察を詳説する

The twelfth sutta of the Mahā Vagga in the Suttanipāta, delivered by the Buddha on a full-moon night, expounding the twofold contemplation of suffering and its origin alongside the cessation of suffering and the path to it.