Yamaka is the sixth book of Abhidhamma. This book is in ten chapters, each dealing with a particular topic of Buddhist teaching: Roots (Mula), Aggregates (Khanda), Bases (Ayatana), Elements (Dhatu), Truths (Sacca/Satya), Formations (Sankhara/Sanskara), Latent States (Anusaya), Consciousness (Citta/Chitta), Phenomena (Dhamma) and Sense Faculties (Indriya).
Colophon:
ศก 2492 เดือน 8 แรม 8 ค่ำ วัน 3 ฯ
[The writing of this manuscript was finished] in 2492 BE, the 8th [lunar] month on the 8th waning-moon day, Tuesday.