Bhagavad-gītā 4.42
BG 4.42
Open the full passageतस्मादज्ञानसम्भूतं हृत्स्थं ज्ञानासिनात्मनः । छित्त्वैनं संशयं योगमातिष्ठोत्तिष्ठ भारत ॥४२॥
Sanskrit
tasmād ajñāna-sambhūtaṁ hṛt-sthaṁ jñānāsinātmanaḥ chittvainaṁ saṁśayaṁ yogam ātiṣṭhottiṣṭha bhārata
Translation
Therefore the doubts which have arisen in your heart out of ignorance should be slashed by the weapon of knowledge. Armed with yoga, O Bhārata, stand and fight.