https://www.youtube.com/watch?v=IXwC0btslv4
There are 16 precepts observed in Soto Zen Buddhism. The first three are called The Three Treasures:
1. Take refuge in the Buddha – someone who is awake
2. Take refuge in the Dharma – Truth that The Buddha taught
3. Take refuge in the Sangha – The community studying the Buddha’s teachings
Sokuzan discusses each one and answers questions from the Sangha.