When Śatadhanvā was refused help by Kṛtavarmā, he went to Akrūra and implored him to help. But Akrūra also replied, "Balarāma and Kṛṣṇa are Themselves the Supreme Personality of Godhead, and anyone who knows Their unlimited strength would never dare offend Them or fight with Them." He further informed Śatadhanvā, "Kṛṣṇa and Balarāma are so powerful that simply by willing They create, maintain and dissolve the whole cosmic manifestation. Unfortunately, persons bewildered by the illusory energy cannot understand the strength of Kṛṣṇa, although the whole cosmic manifestation is fully under His control." He cited, as an example, that Kṛṣṇa, even at the age of seven years, had lifted Govardhana Hill and had continued to hold up the mountain for seven days, exactly as a child carries a small umbrella. Akrūra plainly informed Śatadhanvā that he would always offer his most respectful obeisances to Kṛṣṇa, the Supersoul of everything created and the original cause of all causes. When Akrūra also refused to give him shelter, Śatadhanvā decided to deliver the Syamantaka jewel into the hands of Akrūra. Then, riding on a horse which could run at great speed and up to four hundred miles at a stretch, he fled the city.
When Kṛṣṇa and Balarāma were informed of the flight of Śatadhanvā, They mounted Their chariot, its flag marked by a picture of Garuḍa, and followed immediately. Kṛṣṇa was particularly angry with Śatadhanvā and wanted to kill him because he had killed Satrājit, a superior personality. Satrājit happened to be the father-in-law of Kṛṣṇa, and it is the injunction of the śāstras that one who is guru-druha, who has rebelled against a superior person, must be punished in proportion to the severity of the offense. Because Śatadhanvā had killed His father-in-law, Kṛṣṇa was determined to kill him by any means.
Śatadhanvā’s horse became exhausted and died near a garden house in Mithilā. Unable to take help of the horse, Śatadhanvā began to run with great speed. In order to be fair to Śatadhanvā, Kṛṣṇa and Balarāma also left Their chariot and began to follow Śatadhanvā on foot. While Śatadhanvā and Kṛṣṇa were running, Kṛṣṇa took His disc and cut off Śatadhanvā’s head. After Śatadhanvā was killed, Kṛṣṇa searched through his clothing for the Syamantaka jewel, but He could not find it. He then returned to Balarāma and said, "We have killed this person uselessly, for the jewel is not to be found on his body." Śrī Balarāma suggested, “The jewel might have been kept in the custody of another man in Dvārakā, so You’d better return and search it out.” Śrī Balarāma expressed His desire to remain in Mithilā City for some days because He enjoyed an intimate friendship with the King. Therefore, Kṛṣṇa returned to Dvārakā, and Balarāma entered the city of Mithilā.
When the King of Mithilā saw the arrival of Śrī Balarāma in his city, he was most pleased and received the Lord with great honor and hospitality. He gave many valuable presents to Balarāmajī in order to seek His pleasure. At this time Śrī Balarāma lived in the city for several years as the honored guest of the King of Mithilā, Janaka Mahārāja. During this time, Duryodhana, the eldest son of Dhṛtarāṣṭra, took the opportunity to come to Balarāma and learn from Him the art of fighting with a club.
After killing Śatadhanvā, Kṛṣṇa returned to Dvārakā, and in order to please His wife Satyabhāmā, He informed her of the death of Śatadhanvā, the killer of her father. But He also informed her that the jewel had not been found in his possession. Then, according to religious principles, Kṛṣṇa, along with Satyabhāmā, performed ceremonies in honor of His departed father-in-law. In those ceremonies all the friends and relatives of the family joined together.