SB 11.4.16
indrayanamya sadasi
srnvatam tri-divaukasam
ucur narayana-balam
sakras tatrasa vismitah
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
The servants of the demigods reached the assembly of Indra, and thus, while all the residents of the three heavens listened, they explained to Indra the supreme power of Narayana. When Indra heard of Nara-Narayana Rsi and became aware of his offense, he was both frightened and astonished.