The works of Ādi Śaṅkarācārya

Sanatsujātīyam

p. 210

p. 210

ततो हि शैलाब्धिधरादिभेदाञ्जानीहि विज्ञानविजृम्भितानि ॥

In plain words

So know this: mountain, ocean, earth, and everything else that stands apart as its own thing — all of it is consciousness stretching itself open.

Close to the Sanskrit

Therefore indeed know the distinctions beginning with mountain, ocean, and earth to be the unfoldings of consciousness.