Garudapurana 3.18.6

3.18.6

tato mahattattvatanorviriñcāttu khageśvara /
ahaṃ kārātmako rudraḥ samabhūtsovituṃ harim //

Then from Viriñci, whose body is the principle of cosmic intellect, O lord of birds, / Rudra, whose nature is the ego-principle, arose to protect Hari.