tav imau vai bhagavato
harer amsav ihagatau
bhara-vyayaya ca bhuvah
tau—both; imau—these; vai—certainly; bhagavatah—of the Supreme Personality of Godhead; hareh—of Hari; amsau—part and parcel expansion; iha—here (in this universe); agatau—has appeared; bhara-vyayaya—for mitigation of the burden; ca—and; bhuvah—of the world; krsnau—the two Krsnas (Krsna and Arjuna); yadu-kuru-udvahau—who are the best of the Yadu and Kuru dynasties respectively.
That Nara-Narayana Rsi, who is a partial expansion of Krsna, has now appeared in the dynasties of Yadu and Kuru, in the forms of Krsna and Arjuna respectively, to mitigate the burden of the world.
Narayana is the Supreme Personality of Godhead, and Nara is a part of the Supreme Personality of Godhead, Narayana. Thus the energy and the energetic together are the Supreme Personality of Godhead. Maitreya informed Vidura that Nara, the portion of Narayana, had appeared in the family of the Kurus and that Narayana, the plenary expansion of Krsna, had come as Krsna, the Supreme Personality of Godhead, with the purpose of delivering suffering humanity from the pangs of material burdens. In other words, Narayana Rsi was now present in the world in the forms of Krsna and Arjuna.
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