Mahabharata 7.120.22

स त्वं कर्ण मया सार्धं शूरैश्चान्यैर्महारथैःयुध्यस्व यत्नमास्थाय परं पार्थेन संयुगे

sa tvaṃ karṇa mayā sārdhaṃ śūraiścānyairmahārathaiḥyudhyasva yatnamāsthāya paraṃ pārthena saṃyuge

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