Bhagavad Gita 4.42

तस्मादज्ञानसंभूतं हृत्स्थं ज्ञानासिनाऽऽत्मनः।छित्त्वैनं संशयं योगमातिष्ठोत्तिष्ठ भारत ॥४.४२॥

tasmādajñānasaṃbhūtaṃ hṛtsthaṃ jñānāsinā’’tmanaḥchittvainaṃ saṃśayaṃ yogamātiṣṭhottiṣṭha bhārata

Therefore, with the sword of knowledge (of the Self), cut asunder the doubt of the self, born of ignorance, residing in your heart, and take refuge in Yoga. Arise, O Arjuna!

गीता