This is a weekly class from Deer Park Monastery on the topic "The 40 Tenets of Plum Village" and it is based on a book called Plum Village Looks at Vulture's Peak written by Thich Nhat Hanh. The book describes the essential characteristics of Plum Village practice and teachings.
For an English translation of the tenets themselves, follow this link.
In this class, Brother Phap Luu discusses the 37th Tenet: "The basic practice of Source Buddhism is the Four Domains of Mindfulness which has the function to recognize and transform the habit energies and fully realize the Seven Factors of Enlightenment and the Noble Eightfold Path. The Mahāyāna practice of meditation including the Zen of the patriarchs needs from time to time to go back to take a bath in Source Buddhism in order not to lose the essential Teachings of Buddhadharma."