The “Sahanavavatu mantra” is one of the shaanti (peace) mantras which has its origins in the Taittiriya Upanisad. This mantra is often used as a “universal” prayer, to send the message of peace and prosperity. The mantra may also be used to invoke God’s blessings for harmony amongst teacher(s) and student(s).
Om Namah Shivaya is a three word Mahamantra that is considered to be the supreme invocation to Lord Shiva. The gayatri invocation for Lord Shiva is called Rudra Gayatri. Aum tadpurushAya vidhmahe.
Chapter 6 of the Srimad Bhagavad Gita is titled, “The True Yoga”. In this chapter, the teacher, Shri Krishna, teaches his pupil, Arjuna, the nature of True Yoga. It begins with the explanation of the true nature and spirit of renunciation, and the relationship of renunciation to desireless action.