सर्वकर्मफलादीनां मनसैव न कर्मणा ।निपुणं यः परित्यागी सोऽसंसक्त इति स्मृतः
In plain words
He who renounces, skillfully, by the mind alone and not by outward action, all fruits of action and whatever else is of that kind -- he is remembered as unattached.