Śrīmad-Bhāgavatam · Text 10.72.39
Who is speaking and story frame
तयोरेवं प्रहरतो: समशिक्षाबलौजसो: ।
निर्विशेषमभूद् युद्धमक्षीणजवयोर्नृप ॥ ३९ ॥
tayor evaṁ praharatoḥ
sama-śikṣā-balaujasoḥ
nirviśeṣam abhūd yuddham
akṣīṇa-javayor nṛpa
As they thus fought, this contest between opponents of equal training, strength and stamina reached no conclusion. And so they kept on fighting, O King, without any letup.
Read the purport on Vedabase.ioFrom Canto 10, chapter 14 onward, the translation and purports were completed by Śrīla Prabhupāda's disciples after his departure, and published by the Bhaktivedanta Book Trust.