मनःप्रसादः सौम्यत्वं मौनमात्मविनिग्रहः।
भावसंशुद्धिरित्येतत्तपो मानसमुच्यते।।17.16।।
।।17.16।। मन की प्रसन्नता? सौम्यभाव? मौन आत्मसंयम और अन्तकरण की शुद्धि यह सब मानस तप कहलाता है।।
The austerities of the mind are manah-prasadah or self satisfaction and serenity free from mental imbalances. The word saumyatvam means serenity and benevolence to others. Maunam is silence externally and reflecting internally. Atma-vinigrahah is self-controlling the mind to stay focused on realisation of the atma. Bhava-samsuddhih is purity within and purity of purpose. These austerities of mind are confirmed by Lord Krishna to be in sattva guna the mode of goodness.