Mahabharata 5.58.11

इन्द्रविष्णुसमावेतौ मन्दात्मा नावबुध्यतेसंश्रयाद्द्रोणभीष्माभ्यां कर्णस्य च विकत्थनात्

indraviṣṇusamāvetau mandātmā nāvabudhyatesaṃśrayāddroṇabhīṣmābhyāṃ karṇasya ca vikatthanāt

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