Author: Guru Nanak
Sat - Truth
Nam - Identity / Name
This mantra is probably the most widely used mantra in the practice of Kundalini Yoga. Sat means truth—the reality of one’s existence. Naam means the identity. It is a bij (or seed) mantra. Within the seed is contained all the knowledge of the fully grown tree. The essence or seed is the identity of truth embodied in condensed form, Chanting this mantra awakens the soul and gives you your destiny. This mantra balances the five elements (tattvas).
This mantra information is from Spirit Voyage