यच्छेद्वाङ्मनसी प्राज्ञस्तद्यच्छेज्ज्ञान आत्मनि ।ज्ञानमात्मनि महति नियच्छेत्तद्यच्छेच्छान्त आत्मनि ॥ १३ ॥
In plain words
Let the wise man restrain speech into the mind; let him restrain that [mind] into the knowing self; let him restrain knowledge into the Great [Self]; let him restrain that into the Peaceful Self.