Mahabharata 8.12.26

इत्युक्तो वासुदेवेन तथेत्युक्त्वा द्विजोत्तमःविव्याध केशवं षष्ट्या नाराचैरर्जुनं त्रिभिः

ityukto vāsudevena tathetyuktvā dvijottamaḥvivyādha keśavaṃ ṣaṣṭyā nārācairarjunaṃ tribhiḥ

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