सुखदुःखदशा धीरं साम्यान्न प्रोद्धरन्ति यम् ।निःश्वासा इव शैलेन्द्रं चित्तं तस्य मृतं विदुः
In plain words
The steadfast one whom states of pleasure and pain do not dislodge from equanimity -- as breaths of air do not dislodge the lord of mountains -- his citta, they know, is dead.