Mahabharata 7.146.46

वध्यमाने बले तस्मिंस्तव पुत्रस्य मारिषप्रावर्तत नदी घोरा शोणितौघतरङ्गिणी

vadhyamāne bale tasmiṃstava putrasya māriṣaprāvartata nadī ghorā śoṇitaughataraṅgiṇī

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