The serenity of mind, gentleness, silence, self-restraint, and the purity of mind are called the austerity of thought.
Faith in sacrifice, charity, and austerity is also called SAT. The action for the sake of the Supreme is verily termed as SAT.
Some philosophers say that all work is full of faults and should be given up, while others say that acts of sacrifice, charity, and austerity should not be abandoned.
Speech that is not offensive, truthful, pleasant, beneficial, and is used for the regular reading of scriptures is called the austerity of word.
Whatever you do, whatever you eat, whatever you offer as oblation to the sacred fire, whatever charity you give, whatever austerity you perform, do all that as an offering unto Me.
I am the sweet fragrance in the earth. I am the heat in the fire, the life in all living beings, and the austerity in the ascetics.