The citizens of Mathurā then began to talk about Balarāma. They spoke of His very beautiful lotus-petal eyes, and they remarked of Him, "This boy has killed the Pralamba demon and many others also." While they were thus talking about the activities of Kṛṣṇa and Balarāma, they heard the vibrations of different bands announcing the wrestling match.
(Krsna Book).

The famous wrestler Cāṇūra then began to talk with Kṛṣṇa and Balarāma. "My dear Kṛṣṇa and Balarāma," he said, “we have heard about Your past activities. You are great heroes, and therefore the King has called You. We have heard that Your arms are very strong. The King and all the people present here desire to see a display of Your wrestling abilities. A citizen should be obedient and please the mind of the ruling king; acting in that way, the citizen attains all kinds of good fortune.
(Krsna Book).

We are also indirectly his subjects, and We try to please him as far as possible. This offer of wrestling is a great favor of his, but the fact is that We are simply boys. We sometimes play in the forest of Vṛndāvana with Our friends who are Our own age. We think that to combat persons of equal age and strength is good for Us, but to fight great wrestlers like you would not be good for the audience. It would contradict their religious principles.” Kṛṣṇa thus indicated that the celebrated, strong wrestlers should not challenge Kṛṣṇa and Balarāma to fight.
(Krsna Book).

In reply to this, Cāṇūra said, "My dear Kṛṣṇa, we can understand very well that You are neither a child nor a young man. You are transcendental to everyone, as is Your big brother, Balarāma. You have already killed the elephant Kuvalayāpīḍa, who was capable of fighting thousands of other elephants. You have killed him in a wonderful way. Because of Your strength, it behooves You to compete with the strongest wrestlers amongst us. I therefore wish to wrestle with You, and Your elder brother, Balarāma, will wrestle with Muṣṭika."

(Krsna Book).

After Kaṁsa's wrestlers expressed their determination, the Supreme Personality of Godhead, the killer of Madhu, confronted Cāṇūra, and Lord Balarāma, the son of Rohiṇī, confronted Muṣṭika. Kṛṣṇa and Cāṇūra and then Balarāma and Muṣṭika locked themselves hand to hand, leg to leg, and each began to press against the other with a view to coming out victorious.

(Krsna Book).

But the audience in the wrestling arena was not very much satisfied because the combatants did not appear to be equally matched. They considered Kṛṣṇa and Balarāmato be mere boys before Cāṇūra and Muṣṭika, who were the strongest wrestlers, as solid as stone. Being compassionate and favoring Kṛṣṇa and Balarāma, the many ladies in the audience began to talk as follows: "Dear friends, there is injustice here." Another said, "Even in front of the King this wrestling is going on between incompatible sides." The ladies had lost their sense of enjoyment. They could not encourage the fighting between the strong and the weak. "Muṣṭika and Cāṇūra are just like thunderbolts, as strong as great mountains, and Kṛṣṇa and Balarāma are two delicate boys of very tender age. The principle of justice has already left this assembly. Persons who are aware of the civilized principles of justice will not remain to watch this unfair match. Those taking part in watching this wrestling match are not very much enlightened; therefore whether they speak or remain silent, they are being subjected to the reactions of sinful activities."

(Krsna Book).

Another lady said, “Don’t you see how the face of Lord Balarāma has turned especially beautiful? There is a reddish hue on His white face because He is engaged in a strenuous wrestling match with Muṣṭika.”

(Krsna Book).

Another lady in the assembly addressed her friend, “Dear friend, just imagine how fortunate is the land of Vṛndāvana, where the Supreme Personality of Godhead Himself is present, always decorated with flower garlands and engaged in tending cows along with His brother, Lord Balarāma. He is always accompanied by His cowherd boyfriends, and He plays His transcendental flute. The residents of Vṛndāvana are fortunate to be able to constantly see the lotus feet of Kṛṣṇa and Balarāma, which are worshiped by great demigods like Lord Śiva and by the goddess of fortune. We cannot estimate how many pious activities were executed by the damsels of Vrajabhūmi so that they were able to enjoy the Supreme Personality of Godhead by looking upon the unparalleled beauty of His transcendental body. The beauty of the Lord is beyond compare. No one is higher than or equal to Him in beauty of complexion or bodily luster.

(Krsna Book).

Kṛṣṇa and Balarāma are the reservoir of all kinds of opulence—namely wealth, strength, beauty, fame, knowledge and renunciation. The gopīs are so fortunate that they can see and think of Kṛṣṇa twenty-four hours a day, beginning from their milking the cows or husking the paddy or churning the butter in the morning. While engaged in cleaning their houses and washing their floors, they are always absorbed in thought of Kṛṣṇa.

(Krsna Book).

The parents of Kṛṣṇa and Balarāma, namely Nanda Mahārāja, Yaśodā, Vasudeva and Devakī, were also very anxious because they did not know the unlimited strength of their children. Lord Balarāma was fighting with the wrestler Muṣṭika in the same way that Kṛṣṇa, the Supreme Personality of Godhead, was fighting and wrestling with Cāṇūra. Lord Kṛṣṇa appeared to be cruel to Cāṇūra, and He immediately struck him thrice with His fist.

(Krsna Book).

Muṣṭika also struck Balarāma, and Balarāma returned the stroke with great force. Muṣṭika began to tremble and vomit blood. Distressed, he gave up his vital force and fell down just as a tree falls down in a hurricane. After the two wrestlers were killed, a wrestler named Kūṭa came forward. Lord Balarāma immediately caught him in His left hand and killed him nonchalantly. A wrestler of the name Śala came forward, and Kṛṣṇa immediately cracked his head with a kick. A wrestler named Tośala came forward and was killed in the same way. Thus all the great wrestlers were killed by Kṛṣṇa and Balarāma, and the remaining wrestlers fled from the assembly out of fear for their lives. All the cowherd boyfriends of Kṛṣṇa and Balarāma approached Them and congratulated Them with great pleasure. While trumpets resounded and drums were beaten, the leg bells on the feet of Kṛṣṇa and Balarāma tinkled.

(Krsna Book).

All the people gathered there began to clap in great ecstasy, and no one could estimate the bounds of their pleasure. The brāhmaṇas present began to praise Kṛṣṇa and Balarāma ecstatically. Only Kaṁsa was morose; he neither clapped nor offered benediction to Kṛṣṇa. Kaṁsa resented that the trumpets and drums should be played for Kṛṣṇa's victory, and he was very sorry that the wrestlers had been killed and had fled the assembly.

(Krsna Book).