Bhagavad-gītā 17.16
BG 17.16
Open the full passageमनः प्रसादः सौम्यत्वं मौनमात्मविनिग्रहः । भावसंशुद्धिरित्येतत्तपो मानसमुच्यते ॥१६॥
Sanskrit
manaḥ-prasādaḥ saumyatvaṁ maunam ātma-vinigrahaḥ bhāva-saṁśuddhir ity etat tapo mānasam ucyate
Translation
And satisfaction, simplicity, gravity, self-control and purification of one's existence are the austerities of the mind.