Shiva Purana

siva.sh/siva-purana/uma-samhita/18/59

क्षीरोदेनावृतस्सोऽपि द्विगुणेन समंततः ।। क्षीराब्धिस्सर्वतो व्यास पुष्कराख्येन संवृतः ।। ५९ ।।

sanskrit

It is also covered by the ocean of milk on all sides twice as much The ocean of milk is surrounded on all sides by a lake called Pushkara.

english translation

kSIrodenAvRtasso'pi dviguNena samaMtataH || kSIrAbdhissarvato vyAsa puSkarAkhyena saMvRtaH || 59 ||

hk transliteration by Sanscript