Bhagwad Gita
Chapter 3, Verse 4
न कर्मणामनारम्भान्नैष्कर्म्यं पुरुषोऽश्नुते।
न च संन्यसनादेव सिद्धिं समधिगच्छति।।3.4।।
Not by merely abstaining from work can one achieve freedom from reaction, nor by renunciation alone can one attain perfection.