Mahabharata 6.104.53

नावहास्या यथा वीर भवेम परमाहवेतथा कुरु रणे यत्नं साधयस्व पितामहम्

nāvahāsyā yathā vīra bhavema paramāhavetathā kuru raṇe yatnaṃ sādhayasva pitāmaham

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