Chitrini-nadi

Chitrini-nadi

चित्रिणी, citriṇī

The subtle channel within the sushumna is also called Brahma-nadi. Chitrini-nadi is the lunar current within sushumna.

"Inside the Sushumna there is the Chitrini Nadi, in which is the subtlest of all passages, called the Brahmarandhra.
Sparkling with five colors, moving in the center of sushumna, this chitrini is the most vital core of both the whole body and sushumna."

"Shiva Samhita" (2.18 - 19)