Mahabharata 7.109.19

ततः कर्णं महाराज वारयित्वा शिलीमुखैःदुर्मुखाय रथं शीघ्रं प्रेषयामास पाण्डवः

tataḥ karṇaṃ mahārāja vārayitvā śilīmukhaiḥdurmukhāya rathaṃ śīghraṃ preṣayāmāsa pāṇḍavaḥ

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