The Brahman once won a victory for the Devas. Through that victory of the Brahman, the Devas became elated. They thought, "This victory is ours. This glory is ours."
Brahman placed a straw before him and said: "Burn this." He (Agni) rushed towards it with all speed, but was not able to burn it. So he returned from there and said (to the Devas): "I was not able to find out what this great mystery is."
Brahman placed a straw before him and said: "Blow this away." He (Vayu) rushed towards it with all speed, but was not able to blow it away. So he returned from there and said (to the Devas): "I was not able to find out what this great mystery is."
Then they said to Indra: "O Maghavan (Worshipful One)! Find out what this mystery is." He said: "Yes"; and ran towards it, but it disappeared before him.
स तस्मिन्नेवाकाशे स्त्रियमाजगाम बहुशोभमानामुमाँ
हैमवतीं ताँहोवाच किमेतद्यक्षमिति
Then he saw in that very space a woman beautifully adorned, Uma of golden hue, daughter of Haimavat (Himalaya). He asked: "What is this great mystery?"