Mahabharata 7.166.44

तं स्वयं प्रतिगृह्याथ भगवान्स वरं ददौवव्रे पिता मे परममस्त्रं नारायणं ततः

taṃ svayaṃ pratigṛhyātha bhagavānsa varaṃ dadauvavre pitā me paramamastraṃ nārāyaṇaṃ tataḥ

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