This is an invocation that you can start and end with when doing your sadhana or spiritual practice of yoga. It sets the intention of why you are doing what you are doing. It is in Sanskrit, a language that uses sound to activate the human system. This is a mantra, a form of Nada yoga or sound yoga.
When doing it, sit with eyes closed, spine comfortable erect, and palms on the thighs facing upwards.
Below is a video guided by Sadhguru that you can listen to and/or participate with: