If one should desire to live in this world a hundred years, one should live performing Karma (righteous deeds). Thus thou mayest live; there is no other way. By doing this, Karma (the fruits of thy actions) will not defile thee.
If a man still clings to long life and earthly possessions, and is therefore unable to follow the path of Self-knowledge (Gnana-Nishta) as prescribed in the first Mantram (text), then he may follow the path of right action (Karma-Nishta). Karma here means actions performed without selfish motive, for the sake of the Lord alone. When a man performs actions clinging blindly to his lower desires, then his actions bind him to the plane of ignorance or the plane of birth and death; but when the same actions are performed with surrender to God, they purify and liberate him.