If censuring the duties of kings you would lead an idle life, then, O foremost of Bharata's race, this destruction of the Dhartarashtras was perfectly useless.
आलस्ये कृतचित्तस्य राजधर्मानसूयतः। विनाशे धार्तराष्ट्राणां किं फलं भरतर्षभ॥