[T]he period between four and six in the morning is called the Brahmamuhurta, the Brahmic time, or divine period, and is a very sacred time to meditate. (140)
Swami SatchidanandaThe five points of yama, together with the five points of niyama, remind us of the Ten Commandments of the Christtian and Jewish faiths, as well as of the ten virtues of Buddhism. In fact, there is no religion without these moral or ethical codes. All spiritual life should be based on these things. They are the foundation stones without which we can never build anything lasting. (127)
Swami Satchidananda