The Causal Body is Made of Nadi Channels
The Causal Body is one of two subtle bodies. The other is the Meridian System. The Causal Body is subtler than the meridian system; it is what is purified and activated by “awakening” practices (the speciality of traditions like Buddhism).
The Nadi System
You can imagine the nadi system as being like a fine weave of energetic hairs all over the body. They emanate outwards from my body to your body, from yours to your friends and actually to every being you have a karmic connection with, in this life and in past and future lives. This is why there are so many, maybe 1–2 million in total. So at any moment you are energetically connected to millions of beings. I like to call this “soul family”.
Can you feel it? Just feel into the feeling of “us” or “we”, as it is available right now. With some practice you may discover it is always available!
Relaxing into this connectedness brings a deep sense of belonging and participation in the cosmic weave. It also brings strong motivation to purify one’s nadi system through practice. Practicing guru yoga with a guru’s mantra, for example, is a practice that will do this very rapidly and effectively. The blessings of the guru (who is a living aspect of our own enlightened mind) will cleanse all the karmic dirt from past actions (and past lives) until the entirety of the nadi system is flowing with totally pure (i.e non-karmic) prana (or life energy). The nadi system is clean and clear, no longer obscured by the dirt of past harmful actions. This means that we now live in beneficial kind and compassionate relation to our entire soul family. This is the great motivation to practice without delay, while the conditions are ripe. The benefit this brings to cosmic community is inestimable! Once the causal body is purified we may undertake the great task of selflessly guiding and supporting countless others in getting free: in getting liberated by purifying their own causal bodies!
In practice, this cleansing and activation of the nadi system occurs in stages. The purification process works on successive “clumps” of nadi channels, energetic centres in the causal body which we have already introduced as “bhumis”.