Mbh 3.252.1b

Then going to Sisupala’s son, the son of the Suta defeated him and that highly powerful one also brought under his sway all the neighbouring rulers. And, O bull of the Bharata race, having subjugated the Avantis and concluded peace with them, and having met with the Vrishnis, he conquered the west. And, having come to the quarter of Varuna, he made all the Yavana and Varvara kings pay tribute. And, having conquered the entire earth--east, west, north and south--that hero without any aid brought under subjection all the nations of the Mlechchhas, the mountaineers, the Bhadras, the Rohitakas, the Agneyas and the Malavas. And, having conquered the mighty charioteers, headed by the Nagnajitas, the Suta’s son brought the Sasakas and the Yavanas under his sway. Having thus conquered and brought under his subjection the world, the mighty charioteer and tiger among men came (back) to Hastinapura. That lord of men, Dhritarashtra’s son, accompanied by his father and brothers and friends, came to that mighty bowman, who had arrived, and duly paid homage unto Karna crowned with martial merit. And the king proclaimed his feats, saying, ‘What I have not received from either Bhishma, or Drona, or Kripa, or Vahlika, I have received from thee. May good betide thee! What need of speaking at length! Hear my words, O Karna! In thee, O chief of men, I have my refuge. O mighty-armed one. O tiger among men, without doubt all the Pandavas and the other kings crowned with prosperity, come not to a sixteenth part of thee. Do thou, O mighty bowman, O Karna, see Dhritarashtra, and the illustrious Gandhari, as the bearer of the thunderbolt did Aditi.’