Shiva Purana

siva.sh/siva-purana/rudra-samhita/146/19

पुष्कराद्याः पताकाश्च सौवर्णा रत्नभूषिताः ।। समुद्रास्तस्य चत्वारो रथकंबलिनस्स्मृताः ।।१९।।

sanskrit

The clouds Puṣkara and others constituted the gem-studded banners of glowing colours. The four oceans are remembered as the bullocks of the chariot.

english translation

puSkarAdyAH patAkAzca sauvarNA ratnabhUSitAH || samudrAstasya catvAro rathakaMbalinassmRtAH ||19||

hk transliteration by Sanscript