'A Hamsa (flamingo, meant for the sun) will declare to you another foot of Brahman.' (After these words of Agni), Satyakâma, on the morrow, drove the cows onward. And when they came towards the evening, he lighted a fire, penned the cows, laid wood on the fire, and sat down behind the fire, looking toward the east.

In plain words: The fire says a swan-like bird will teach him the next part. The next day Satyakama drives the cows on, and in the evening again makes a fire, pens the cows, and sits facing east.