Bhagavad Gita 4.42

तस्माद्ज्ञानसंभूतं हृतस्थं ज्ञानसिनात्मन: |
चित्त्वैनं संशयं योगमातिष्ठोत्तिष्ठ भारत

Translation

Therefore, with the sword of knowledge, cut asunder the doubts that have arisen in your heart. O scion of Bharat, establish yourself in karm yog. Arise, stand up, and take action!