Drona said "If in battle, the heroic Arjuna does not protect king Yudhishthira, then you may already regard the foremost of the Pandavas, brought under your control.
द्रोण उवाच न चेद् युधिष्ठिरं वीरः पालयत्यर्जुनो युधि। मन्यस्व पाण्डवश्रेष्ठमानीतं वशमात्मनः॥