Maharaja Yadu was different from his brothers. As stated in the next verse, turvasus coditah pitra druhyus canus ca bharata/ pratyacakhyur adharmajnah. Maharaja Yadus brothers refused to accept their fathers proposal because they were not completely aware of dharma. To accept orders that follow religious principles, especially the orders of ones father, is very important. Therefore when the brothers of Maharaja Yadu refused their fathers order, this was certainly irreligious. Maharaja Yadus refusal, however, was religious. As stated in the Tenth Canto, yados ca dharma-silaya: Maharaja Yadu was completely aware of the principles of religion. The ultimate principle of religion is to engage oneself in devotional service to the Lord. Maharaja Yadu was very eager to engage himself in the Lords service, but there was an impediment: during youth the material desire to enjoy the material senses is certainly present, and unless one fully satisfies these lusty desires in youth, there is a chance of ones being disturbed in rendering service to the Lord. We have actually seen that many sannyasis who accept sannyasa prematurely, not having satisfied their material desires, fall down because they are disturbed. Therefore the general process is to go through grhastha life and vanaprastha life and finally come to sannyasa and devote oneself completely to the service of the Lord. Maharaja Yadu was ready to accept his fathers order and exchange youth for old age because he was confident that the youth taken by his father would be returned. But because this exchange would delay his complete engagement in devotional service, he did not want to accept his fathers old age, for he was eager to achieve freedom from disturbances. Moreover, among the descendants of Yadu would be Lord Krsna. Therefore, because Yadu was eager to see the Lords appearance in his dynasty as soon as possible, Yadu refused to accept his fathers proposal. This was not irreligious, however, because Yadus purpose was to serve the Lord. Because Yadu was a faithful servant of the Lord, Lord Krsna appeared in his dynasty. As confirmed in the prayers of Kunti, yadoh priyasyanvavaye. Yadu was very dear to Krsna, who was therefore eager to descend in Yadus dynasty. In conclusion, Maharaja Yadu should not be considered adharma jna, ignorant of religious principles, as the next verse designates his brothers. He was like the four Sanakas (catuh-sana), who refused the order of their father, Brahma, for the sake of a better cause. Because the four Kumaras wanted to engage themselves completely in the service of the Lord as brahmacaris, their refusal to obey their fathers order was not irreligious.