Mahabharata 10.8.144

धृतराष्ट्र उवाच · dhṛtarāṣṭra uvāca

प्रागेव सुमहत्कर्म द्रौणिरेतन्महारथःनाकरोदीदृशं कस्मान्मत्पुत्रविजये धृतः

prāgeva sumahatkarma drauṇiretanmahārathaḥnākarodīdṛśaṃ kasmānmatputravijaye dhṛtaḥ

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