But Bhima warded it off with shafts from his powerful bow and covered Karna with a shower of arrows and forced him to turn back and walk on foot. Duryodhana, who watched this combat, was greatly grieved and sent seven of his brothers Chitra, Upachitra, Chitraksha, Charuchitra, Sarasana, Chitrayudha and Chitravarman, to relieve Radheya. They gave battle to Bhima displaying great skill and energy. But fell dead one after another, for Bhima's passion was roused and his attack was irresistible. When Karna saw so many of the sons of Dhritarashtra sacrificing themselves for him, his face was wet with tears and he mounted a fresh chariot and began to attack Bhima with deadly effect. The two combatants clashed like clouds in a thunderstorm. Kesava, Satyaki and Arjuna were filled with admiration and joy as they watched Bhima fighting. Bhurisravas, Kripacharya, Aswatthama, Salya, Jayadratha and many other warriors of the Kaurava army also broke into exclamations, astonished at the way in which Bhima fought. Duryodhana was stung to the quick and burned with anger. Karna's plight caused him extreme anxiety. He feared Bhima would kill Radheya that day, and sent seven more of his brothers directing them to surround Bhima and attack him simultaneously. The seven brothers sent by Duryodhana attacked Bhima. But fell one after another, struck down by his arrows. Vikarna, who was killed last, was beloved of all. When Bhima saw him fall dead after a brave fight, he was deeply moved and exclaimed: "Alas, O Vikarna, you were just and knew what was dharma! You fought in loyal obedience to the call of duty. I had to kill even you. Indeed this battle is a curse upon us wherein men like you and the grandsire Bhishma have had to be slaughtered." Seeing Duryodhana's brothers, who came to help him, slain one after another in this manner, Karna was overwhelmed by anguish. He leant back on his seat in the chariot and closed his eyes unable to bear the sight. Then recovering control over his emotions he hardened his heart and began again his attack on Bhima. Bow after bow was broken up by Bhimasena's shaft, but Karna kept the battle.