tavat sarve vatsa-palah
pasyato ’jasya tat-ksanat
tavat—so long; sarve—all; vatsa-palah—both the calves and the boys tending them; pasyatah—while he was watching; ajasya—of Lord Brahma; tat-ksanat—immediately; vyadrsyanta—were seen; ghana-syamah—as having a complexion resembling bluish rainclouds; pita-kauseya-vasasah—and dressed in yellow silk garments.
Then, while Lord Brahma looked on, all the calves and the boys tending them immediately appeared to have complexions the color of bluish rainclouds and to be dressed in yellow silken garments.
While Brahma was contemplating, all the calves and cowherd boys immediately transformed into visnu-murtis, having bluish complexions and wearing yellow garments. Brahma was contemplating his own power and the immense, unlimited power of Krsna, but before he could come to a conclusion, he saw this immediate transformation.
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