At last, when Lord Śiva released his personal weapon, called Pāśupata-astra, Kṛṣṇa immediately counteracted it with the Nārāyaṇa-astra. Lord Śiva then became exasperated in fighting with Lord Kṛṣṇa. Kṛṣṇa then took the opportunity to release His yawning weapon. When this weapon is released, the opposing party becomes tired, stops fighting and begins to yawn. Consequently, Lord Śiva became so fatigued that he refused to fight anymore and began yawning. Kṛṣṇa was now able to turn His attention from the attack of Lord Śiva to the efforts of Bāṇāsura, and He began to kill Bāṇāsura’s personal soldiers with swords and clubs. Meanwhile, Lord Kṛṣṇa’s son Pradyumna was fighting fiercely with Kārttikeya, the commander in chief of the demigods. Kārttikeya was wounded, and his body was bleeding profusely. In this condition, he left the battlefield and, without fighting anymore, rode away on the back of his peacock carrier. Similarly, Lord Balarāma smashed Bāṇāsura’s commander in chief, Kumbhāṇḍa, with the strokes of His club. Kūpakarṇa was also wounded in this way, and both he and Kumbhāṇḍa fell on the battlefield, Kumbhāṇḍa being fatally wounded. Without guidance, all of Bāṇāsura’s soldiers scattered here and there.
When Bāṇāsura saw that his soldiers and commanders had been defeated, his anger only increased. He thought it wise to stop fighting with Sātyaki, Kṛṣṇa’s commander in chief, and instead directly attack Lord Kṛṣṇa. Now having the opportunity to use his one thousand arms, he rushed toward Kṛṣṇa, simultaneously working five hundred bows and two thousand arrows. Such a foolish person could never measure Kṛṣṇa’s strength. Immediately, without difficulty, Kṛṣṇa cut each of Bāṇāsura’s bows into two pieces and, to check him from going further, made the horses of his chariot lie on the ground so that the chariot broke to pieces. After doing this, Kṛṣṇa blew His conchshell, Pāñcajanya.
There was a demigoddess named Koṭarā who was worshiped by Bāṇāsura, and their relationship was as mother and son. Mother Koṭarā was upset that Bāṇāsura’s life was in danger, so she appeared on the scene. With naked body and scattered hair, she stood before Lord Kṛṣṇa. Śrī Kṛṣṇa did not like the sight of this naked woman, and to avoid seeing her He turned His face. Bāṇāsura, getting this chance to escape Kṛṣṇa’s attack, left the battlefield. All the strings of his bows had been broken, and there was no chariot or driver, so he had no alternative but to return to his city. He lost everything in the battle.
Being greatly harassed by the arrows of Kṛṣṇa, all the associates of Lord Śiva—the hobgoblins and ghostly Bhūtas, Pretas and kṣatriyas—left the battlefield. Lord Śiva then took to his last resort. He released his greatest death weapon, known as Śiva-jvara, which destroys by excessive temperature. It is said that at the end of creation the sun becomes twelve times more scorching than usual. This twelve-times-hotter temperature is called Śiva-jvara. When the Śiva-jvara personified was released, he had three heads and three legs, and as he came toward Kṛṣṇa it appeared that he was burning everything to ashes. He was so powerful that he made blazing fire appear in all directions, and Kṛṣṇa observed that he was specifically coming toward Him.
As there is a Śiva-jvara weapon, there is also a Nārāyaṇa-jvara weapon, which is represented by excessive cold. When there is excessive heat, one can somehow or other tolerate it, but when there is excessive cold, everything collapses. This is actually experienced by a person at the time of death. At the time of death, the temperature of the body first of all increases to 107 degrees Fahrenheit, and then the whole body collapses and immediately becomes as cold as ice. To counteract the scorching heat of the Śiva-jvara, there is no other weapon but the Nārāyaṇa-jvara.
Therefore, when Lord Kṛṣṇa saw that the Śiva-jvara had been released by Lord Śiva, He had no recourse other than to release the Nārāyaṇa-jvara. Lord Śrī Kṛṣṇa is the original Nārāyaṇa and the controller of the Nārāyaṇa-jvara weapon. When the Nārāyaṇa-jvara was released, there was a great fight between the two jvaras. When excessive heat is counteracted by extreme cold, it is natural for the hot temperature to gradually reduce, and this is what occurred in the fight between the Śiva-jvara and the Nārāyaṇa-jvara. Gradually, the Śiva-jvara’s temperature diminished, and the Śiva-jvara began to cry for help from Lord Śiva, but Lord Śiva was unable to help him in the presence of the Nārāyaṇa-jvara. Unable to get any help from Lord Śiva, the Śiva-jvara could understand that he had no means of escape outside of surrendering unto Nārāyaṇa, Lord Kṛṣṇa Himself. Lord Śiva, the greatest of the demigods, could not help him, what to speak of the lesser demigods, and therefore the Śiva-jvara ultimately surrendered unto Kṛṣṇa, bowing before Him and offering a prayer so that the Lord might be pleased and give him protection.