Shiva Purana
अन्यास्सहस्रशस्तत्र क्षुद्रनद्यो महामुने ॥ महीधरास्तथा संति शतशोऽथ सहस्रशः ॥ ५६ ॥
O great sage, there are thousands of small rivers there. The mountains too are in hundreds and thousands.
english translation
anyAssahasrazastatra kSudranadyo mahAmune ॥ mahIdharAstathA saMti zatazo'tha sahasrazaH ॥ 56 ॥
hk transliteration by Sanscript