Srimad Bhagavatam
Canto 10 Chapter 24 Text 8

sri-nanda uvaca
parjanyo bhagavan indro
meghas tasyatma-murtayah
te ‘bhivarsanti bhutanam
prinanam jivanam payah

TRANSLATION
Nanda Maharaja replied: The great Lord Indra is the controller of the rain. The clouds are his personal representatives, and they directly provide rainwater, which gives happiness and sustenance to all creatures.