kṣattrā kauṣāravo muniḥ
tam āha bahu-mānayan
The great sage Maitreya Muni is described here as bhagavān because he surpassed all ordinary human beings in learning and experience. Thus his selection of the greatest welfare service for the world is considered authoritative. The all-inclusive welfare service for the entire human society is devotional service to the Lord, and, as requested by Vidura, the sage described the same very appropriately.