यो नित्यमध्यात्ममयो नित्यमन्तर्मुखः सुखी ।नित्यं चिदनुसंधानो मनःशोकैर्न बाध्यते
In plain words
He who is ever wholly one with adhyātma, ever turned within, happy, ever engaged in sustained attention upon cit — he is not troubled by the sorrows of the mind.