The vibration of Lord Kṛṣṇa's conchshell sounded like a thunderbolt at the time of the dissolution of the whole cosmic manifestation. The demon Mura heard the vibration of the conchshell, awakened from his sleep and came out to see what had happened. He had five heads and had long been living within the water. The Mura demon was as brilliant as the sun at the time of the dissolution of the cosmos, and his temper was like blazing fire. The effulgence of his body was so dazzling that he was difficult to see with open eyes. When he came out, he first took out his trident and rushed the Supreme Personality of Godhead. The demon Mura in his onslaught was like a big snake attacking Garuḍa. His angry mood was very severe, and he appeared ready to devour the three worlds. First of all he attacked the carrier of Kṛṣṇa, Garuḍa, by whirling and then throwing his trident, and through his five mouths he vibrated sounds like the roaring of a lion. These roaring vibrations spread all over the atmosphere until they extended all over the world and into outer space, up and down and out to the ten directions, rumbling throughout the entire universe.
Lord Kṛṣṇa saw that the trident of the Mura demon was rushing toward His carrier, Garuḍa. Immediately, by a trick of His hand, He took two arrows and threw them toward the trident, cutting it to pieces. Simultaneously, using many arrows, He pierced the mouths of the demon Mura. When the Mura demon saw himself outmaneuvered by the Supreme Personality of Godhead, he immediately began to strike the Lord in great anger with his club. But Lord Kṛṣṇa, with His own club, broke the club of Mura to pieces before it could reach Him. The demon, bereft of his weapon, decided to attack Kṛṣṇa with his strong arms, but Kṛṣṇa, with the aid of His Sudarśana cakra, immediately separated the demon's five heads from his body. The demon then fell into the water, just as the peak of a mountain falls into the ocean after being struck by the thunderbolt of Indra.
This demon Mura had seven sons, named Tāmra, Antarikṣa, Śravaṇa, Vibhāvasu, Vasu, Nabhasvān and Aruṇa. All of them became puffed up and vengeful because of the death of their father, and to retaliate they prepared in great anger to fight with Kṛṣṇa. They equipped themselves with the necessary weapons and situated Pīṭha, another demon, to act as commander in the battle. By the order of Bhaumāsura, all of them combinedly attacked Kṛṣṇa.
When they came before Lord Kṛṣṇa, they began to shower Him with many kinds of weapons, like swords, clubs, lances, arrows and tridents. But they did not know that the strength of the Supreme Personality of Godhead is unlimited and invincible. Kṛṣṇa, with His arrows, cut all the weapons of the men of Bhaumāsura into pieces, like grains. Kṛṣṇa then threw His weapons, and Bhaumāsura's commander in chief, Pīṭha, along with his assistants, fell down, their military dress cut off and their heads, legs, arms and thighs severed. All of them were sent to the superintendent of death, Yamarāja.
Bhaumāsura, who was also known as Narakāsura, happened to be the son of the earth personified. When he saw that all his soldiers, commanders and fighters had been killed on the battlefield by the strokes of the weapons of the Personality of Godhead, he became exceedingly angry at the Lord. He then came out of the city with a great number of elephants who had all been born and brought up on the seashore. All of them were highly intoxicated. When they came out, they saw that Lord Kṛṣṇa and His wife were beautifully situated high in outer space just like a blackish cloud about the sun, glittering with the light of electricity. The demon Bhaumāsura immediately released a weapon called Śataghnī, by which he could kill hundreds of warriors with one stroke, and all his assistants simultaneously threw their respective weapons at the Supreme Personality of Godhead. Lord Kṛṣṇa counteracted all these weapons by releasing His feathered arrows. The result of this fight was that all the soldiers and commanders of Bhaumāsura fell to the ground, their arms, legs and heads separated from their trunks, and all their horses and elephants also fell with them. In this way, all the weapons released by Bhaumāsura were cut to pieces by the Lord's arrows.
The Lord was fighting on the back of Garuḍa, who was helping Him by striking the horses and elephants with his wings and scratching their heads with his nails and sharp beak. The elephants, feeling much pain from Garuḍa's attack on them, all dispersed from the battlefield. Bhaumāsura alone remained on the battlefield, and he engaged himself in fighting with Kṛṣṇa. He saw that Kṛṣṇa's carrier, Garuḍa, had caused great disturbance to his soldiers and elephants, and in great anger he struck Garuḍa with all his strength, which defied the strength of a thunderbolt. Fortunately, Garuḍa was not an ordinary bird, and he felt the strokes given by Bhaumāsura just as a great elephant feels the impact of a garland of flowers.
Bhaumāsura thus came to see that none of his tricks would act upon Kṛṣṇa, and he became aware that all his attempts to kill Kṛṣṇa would be frustrated. Yet he tried for the last time, taking a trident in his hand to strike Him. Kṛṣṇa was so dexterous that before Bhaumāsura could throw his trident, his head was cut off by the sharp Sudarśana cakra. His head, illuminated by earrings and a helmet, fell down on the battlefield. On the occasion of Bhaumāsura's being killed by Lord Kṛṣṇa, all the demon's relatives screamed in disappointment, and the saintly persons glorified the chivalrous activities of the Lord. Taking this opportunity, the denizens of the heavenly planets showered flowers on the Lord.