Bhagavad Gita Chapter 17 Verse 15

Gita 17.15

अनुद्वेगकरम्, वाक्यम्, सत्यम्, प्रियहितम्, च, यत्,
स्वाध्यायाभ्यसनम्, च, एव, वाङ्मयम्, तपः, उच्यते।।15।।

Gita 17.15

Anudwegkaram’, vaakyam’, satyam’, priyahitam’, ch, yat’,
Swaadhyaayaabhyasanam’, ch, ev, vaankmayam’, tapH, uchyate ||15||

Translation: (Yat’) that which (anudwegkaram’) does not cause agitation (priyahitam’) is pleasing and beneficial (ch) and (satyam’) true (vaakyam’) is speech (ch) and (swaadhyaay ahyasanam’) study of religious texts and practice of the jaap of the mantra of God (ev) only (vaankmayam’) related to speech (tapH) austerity (uchyate) is said to be. (15)

Translation: That which does not cause agitation, is pleasing and beneficial, and is true speech, and study of religious texts, and the practice of the jaap of the mantra of God only is said to be the austerity related to speech.