Mahabharata 3.170.67

3.170.67

evameva sadā bhāvyaṃ sthireṇājau dhanaṃjaya |
asaṃmūḍhena cāstrāṇāṃ kartavyaṃ pratipādanam || 67 ||

And, O Dhananjaya, thus in battle shalt thou always remain calm, and discharge the weapons unerringly, and there shall not stand thee in fight celestials, and Danavas, and Rakshasas, and Yakshas, and Asuras, and Gandharvas and birds and serpents. And, O Kaunteya, by conquering it even by the might of thy arms, Kunti's son Yudhishthira, will rule the earth.'"