In plain words
Each had pushed in from his own side and entered the battle. Among the Pāṇḍavas, Dharmaja faced Karṇa and was fighting many kinds of battle with him there. But the Pāṇḍava army, unable to stand against Karṇa's weapons, was scattering in pieces. Dharmaja too was worn out. The strength and skill to fight in him grew thinner moment by moment. The army set off in all four directions and ran away. With nothing left to do, Dharmaja too went to his tent. Unable to bear this defeat, Dharmaja grew fierce and was tormented in many ways. Just then Arjuna came in. The moment he saw Arjuna, Dharmaja flared up. In his anger he fell upon Arjuna. He reproached him: "Your strength and skill, the power of your Gāṇḍīva, are of no use." He went on trying to reproach Arjuna in many other ways too. Arjuna could not bear it; he raised his Gāṇḍīva and made to strike Dharmaja. In that very moment Kṛṣṇa appeared there. He calmed Arjuna. "Arjuna, it is not right to insult Dharmaja, your elder brother, in this way. To honour one's elders, and to receive their honour in return: this is the chief aim of brothers. To forget your aim, to nurse hatred over mere worldly words and take the wrong road, is not right," Kṛṣṇa taught Arjuna well. He sent Dharmaja inside. In many other ways too He consoled Arjuna and gave him good teachings of Dharma. Arjuna listened to the words that were spoken, grew calm and went to his own tent.
Meanwhile Kṛṣṇa went to Dharmaja's room, waited for the moment when Dharmaja sat in sorrow, and took firm hold of both of Dharmaja's feet. "Dharmaja, such haste does not become you, the elder. To revile Arjuna, your brother, is not good. These were only words said in some passing heat, and nothing else. This principle of Prema must not be broken among the Pāṇḍavas, who are showing an ideal to the country. The Pāṇḍavas are ideal brothers. You must keep this name that is so well deserved. So go at once and beg Arjuna for forgiveness," He said. Seeing these teachings and these scenes, Dharmarāja shed tears. "Swami! For You, whom the whole world worships, to take hold of the feet of a worthless man like me is a great shame to me." He held His feet and prayed, "Forgive me," and at once, keeping Kṛṣṇa's command before him, went to Arjuna, took his hands and said, "Brother! Forgive me," and pleaded. To one who looks with the eye of God, these things seem very small. Some may even find fault, saying it is not right for Kṛṣṇa, who is God, to enter into such small matters. But the human ideals that are in God He shows and teaches even in little matters such as these. Out of the frenzy of Prema He has for His devotees, out of Prema and affection, God does many things that ought not to be done.