THE BHAGAVAD GITA Chapter 17
Excerpts from God Talks with Arjuna: The Bhagavad Gita
by Paramahansa Yogananda
Three Kinds of Faith
(18) Austerities are said to be rajasic, unstable and fleeting, when practiced/or the purpose of ostentation and for gaining men's recognition, honor, and homage.
(19) Tamasic austerities are those based on ignorance or foolishness or performed for self-torture or for injuring others.
The good or sattvic gift is one made for the sake of righteousness, without expectation of anything in return, and is bestowed in proper time and place on a deserving person.
"Aum-Tat-Sat" is considered to be the triple designation of Brahman (God). By this power were created, in the beginning, the Brahmins (knowers of Brahman), the Vedas, and the sacrificial rites. [—Commentary]
Therefore the acts of the followers of Brahman—sacrifice, gift-giving, and austerities as enjoined by the scriptures—are always started with the chanting of "Aum." [—Commentary]
Absorb thy mind in Me; become My devotee; resign all things to Me; bow down to Me. Thou art dear to Me, so in truth do I promise thee: Thou shalt attain Me! [—Commentary]