Bhagavad Gita 11.34

द्रोणं च भीष्म च जयद्रथं च कर्णं तात्यानपि योधवीरन् |
मया हतंस्त्वं जहि मां व्यतिष्ठा युध्यस्व जेतासि राणे सपत्नान्

Translation

Dronacharya, Bheeshma, Jayadratha, Karn, and other brave warriors have already been killed by Me. Therefore, slay them without being disturbed. Just fight and you will be victorious over your enemies in battle.