Mahabharata 12.1.44

12.1.44

śrotumicchāmi bhagavaṃstvattaḥ sarvaṃ yathātatham |
bhavānhi sarvavidvidvām̐lloke veda kṛtākṛtam || 44 ||

That hero and great bowman was therefore slain by Arjuna in battle. Subsequently I have come to know, O best of regenerate ones, that he was my uterine brother. Indeed, at Pritha's words I have come to know that Karna was the eldest born! Having caused my brother to be slain, my heart is burning exceedingly. If I had both Karna and Arjuna for aiding me, I could have vanquished Vasudeva himself. Whilst I was tortured in the midst of the assembly by the wicked-souled sons of Dhritarashtra, my wrath, suddenly provoked, became cooled at sight of Karna. Even while listening to the harsh and bitter words of Karna himself on that occasion of our match at dice, to the words, that Karna uttered from desire of doing what was agreeable to Duryodhana, my wrath became cooled at sight of Karna's feet. It seemed to me that Karna's feet resembled the feet of our mother Kunti. Desirous of finding out the reason of that resemblance between him and our mother, I reflected for a long time. With even my best exertions I failed to find the cause. Why, indeed, did the earth swallow up the wheels of his car at the time of battle? Why was my brother cursed? It behoveth thee to recite all this to me. I desire to hear everything from thee, O holy one! Thou art acquainted with everything in this world and thou knowest both the past and the future!'