Skandapurana 1.3.25.12

1.3.25.12

vimāsthastadā brahmā viṣṇuśca garuḍopari..
airāvatagataśceṃdraḥ kuberaḥ puṣpakopari.. 27.12 ..

Brahmā was then in his aerial chariot, Viṣṇu upon Garuḍa,
Indra mounted on Airāvata, Kubera upon the Puṣpaka;