Mahabharata 7.114.78

योद्धव्यमाविशान्यत्र न योद्धव्यं तु मादृशैःमादृशैर्युध्यमानानामेतच्चान्यच्च विद्यते

yoddhavyamāviśānyatra na yoddhavyaṃ tu mādṛśaiḥmādṛśairyudhyamānānāmetaccānyacca vidyate

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