dvijatmaja me yuvayor didrksuna
mayopanita bhuvi dharma-guptaye
kalavatirnav avaner bharasuran
hatveha bhuyas tvarayetam anti me
[Lord Maha-Visnu said:] I brought the brahmana’s sons here because I wanted to see the two of you, My expansions, who have descended to the earth to save the principles of religion. As soon as you finish killing the demons who burden the earth, quickly come back here to Me.
As explained by Srila Visvanatha Cakravarti, the secret import of these words spoken for Arjuna’s edification is as follows: “You two, who have descended along with your kalas, your personal energies, should kindly return to Me after killing the demons who burden the earth. Please quickly send these demons here to Me for the sake of their liberation.” It is stated in Sri Hari-vamsa and in the Second Canto of Srimad-Bhagavatam that the path of gradual liberation passes through the intermediate station of Lord Maha-Visnu’s abode, outside the eighth shell of the universe.