How does Namaskaram lead to moksha (liberation)?

In response to this post here about how Namaskaram can lead to moksha (liberation), I received the following question:

Q. How does namaskaram cleanse the energy? How will it lead to moksha?

Tom: regular practice of Namaskaram with heartfelt devotion and feeling purifies the mind, transforming rajas (passionate energy) and tamas (dull or negative energy) to sattva (peaceful energy).

Then it sacrifices the ego in the depth of silence so that all that remains is the pristine pure reality.

Om Tat Sat