Mahabharata 4.38.54

यस्त्वयं सायको दीर्घः शिलीपृष्ठः शिलीमुखःअर्जुनस्यैष संग्रामे गुरुभारसहो दृढः

yastvayaṃ sāyako dīrghaḥ śilīpṛṣṭhaḥ śilīmukhaḥarjunasyaiṣa saṃgrāme gurubhārasaho dṛḍhaḥ

Our plain-language meaning of this verse is waiting for scholar review.