देवद्विजगुरुप्राज्ञपूजनं शौचमार्जवम् । ब्रह्मचर्यमहिंसा च शारीरं तप उच्यते ॥ १४ ॥
deva-dwija-guru-prājña-pūjanaṁ śhaucham ārjavam brahmacharyam ahinsā cha śhārīraṁ tapa uchyate
Translation
Worship of the gods, the twice-born, teachers and the wise; purity, straightforwardness, self-restraint and non-violence: this is called austerity of the body.
Hindi Meaning (हिंदी अर्थ)
देवता, ब्राह्मण, गुरु और ज्ञानीजनों का पूजन, पवित्रता, सरलता, ब्रह्मचर्य और अहिंसा, यह शरीर-संबंधी तप कहा जाता है।
Commentary
Verses 14–16 give one of the Gita's most practical teachings: tapas, austerity, is threefold, of body, speech and mind. None of it involves self-torture. Bodily austerity is respect for the worthy, cleanliness, honesty, self-control (brahmacharya) and not harming others.