देवद्विजगुरुप्राज्ञपूजनं शौचमार्जवम्।ब्रह्मचर्यमहिंसा च शारीरं तप उच्यते।।17.14।।
The worship of gods, twice-borns, venerable persons, and the wise; purity, straightforwardness, celibacy, and non-injury—these are said to be bodily austerities.
Osho’s Commentary
Krishna now defines the three kinds of austerity, tapas. First, the austerity of the body. It is not self-torture. It is a reverence for all that is divine—for the gods, for the wise ones, for your own teachers. It is purity, straightforwardness. It is brahmacharya—not just celibacy, but a conscious conservation and transformation of the life-energy. And it is ahimsa, non-violence. This is a beautiful, positive vision of austerity. It is to make the body a pure, harmonious, and loving instrument, a temple for the divine to dwell in.