Mahabharata 6.2.25

अन्तरिक्षे वराहस्य वृषदंशस्य चोभयोःप्रणादं युध्यतो रात्रौ रौद्रं नित्यं प्रलक्षये

antarikṣe varāhasya vṛṣadaṃśasya cobhayoḥpraṇādaṃ yudhyato rātrau raudraṃ nityaṃ pralakṣaye

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