Abhidhamma Kathātvatthu is the sophisticated high-level Dhamma explaining compatibility of things: Khandha, Āyatana, and Dhātu.
Colophon:
Sudinnaṃ vatta me dānaṃ dhammadānaṃ nibbāna paccayo hotu no niccaṃ dhuvaṃ dhuvaṃ
I, Novice Paññā, inscribed this manuscript during my stay of assistance to Svādhu Gambhīra of Wat Si Phichai Huai Ha. [The writing of this manuscript] was finished by myself at the time of the morning drum. The manuscript is completed at the time of morning drum. The principal initiator was Police Sergeant Bunpan, together with his wife and his children, who sponsored the writing of this manuscript entitled Abhidhammā-kathāvatthu, so that Buddhism could be prolonged until [the end of] 5,000 years.