Mahabharata 6.104.54

अहं ते रक्षणं युद्धे करिष्यामि परंतपवारयन्रथिनः सर्वान्साधयस्व पितामहम्

ahaṃ te rakṣaṇaṃ yuddhe kariṣyāmi paraṃtapavārayanrathinaḥ sarvānsādhayasva pitāmaham

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