What is the concept of 'Viraja' and what role does it play in spiritual liberation?

In Chapter 37, 'Viraja' is described as a state that exists beyond the dualities of righteousness and unrighteousness. Its primary role is to be the 'destroyer of ignorance and desire.' This is a crucial function because the text explains that desires are the seeds of rebirth and ignorance is the root of worldly sorrow. The state of Viraja is a place where 'death has no movement at all,' signifying a transcendence of mortal limitations. By eliminating ignorance and desire, it leads to the renunciation that is described as union with the bliss of Brahman, making it an essential step toward spiritual liberation.