SB 10.27.19
surabhir uvaca
krsna krsna maha-yogin
visvatman visva-sambhava
bhavata loka-nathena
sa-natha vayam acyuta
Translation:
Mother Surabhi said: O Krsna, Krsna, greatest of mystics! O Soul and origin of the universe! You are the master of the world, and by Your grace, O infallible Lord, we have You as our master.
Purport:
Srila Visvanatha Cakravarti Thakura points out here that mother Surabhi is feeling great ecstasy as she repeats the words “Krsna, Krsna.” Krsna lifted Govardhana Hill by His mystic power and thus protected the cows of Vrndavana, whereas her so-called master, Indra, had tried to kill them. Thus Surabhi now clearly understands that it is not the demigods but rather the Supreme God, Krsna Himself, who is her real master forever.