What are the techniques for uniting rajas and retas?
To unite rajas and retas inside the body requires causing the winds or energies to enter the central channel. Ultimately this achieves the same end as the process of uniting prana and apana but the emphasis is a little different. To cause the winds to enter the central channel there are a continuum of approaches ranging from very gentle to very forceful. In the very gentle approaches one attempts to bring the winds into the central channel by imagination or concentration alone. One visualizes an image, such as a deity or a seed-syllable in the central channel and lets mind become absorbed in that. It is a common tenet of yogic lore that where the mind goes the winds will follow. So if the mind can be kept steadily focussed on inside of the central channel then the winds will enter there. When the winds enter there the knots holding the rajas and retas loosen and the two are allowed to flow together. It is worth noting that it was Gopi Krishna’s practice of a very simliar method that le