Revākhaṇḍa ascribed to the Vāyupurāṇa (RKV) 193.30

193.30

amī samudrāstava deva dehe maurvālayaḥ śailadharās tathāmī /
imāśca gaṅgāpramukhāḥ sravantyo dvīpāṇyaśeṣāṇi vanādideśāḥ //

These oceans are in your body, O God, the abode of submarine fire, and likewise these mountains, / and these rivers headed by the Gaṅgā, all the continents, and the regions of forests and the like.