MahaSatipatthana Sutta: Great Discourse on Four-Fold Establishment of Mindfulness
This book explains Satipatthana or mindfulness practice by going directly and referring to this Discourse, which the Buddha originally expounded to the people of Kurus. So here we return to the basic orthodox Discourse spoken by the Buddha as a guide. In this way you gain a complete understanding of what the Buddha really taught. You can also gauge whether you are on the right track or if there is any missing part in your practice that you might need to include.