Solar and Lunar Nadis – the masculine (Ida) and feminine (Pingala) psychic channels representing the basic duality in existence.
Nadis are the subtle, psychic channels in the subtle body. In the subtle body, there are fourteen principle nadis out of which three nadis are most important – Ida, Pingala, and Sushmana. These are the channels or the pathways through which prana (life energy) flows. Like chakras, these nadis aren’t physically visible inside the body. Ida is the left psychic channel. It is feminine in nature and is represented by moon. Therefore, it is also known as Lunar Nadi. Pingala is the right psychic channel. It is masculine in nature and is represented by Sun. Therefore, it is also known as Solar Nadi. Ida and Pingala represents the basic duality. Before the creation, there is no duality. As the creation begins, there is a duality. Thus, without duality, there is no creation.