क्षुब्धाद्रौ क्षुभितजलोदरे तदानीं दुग्धाब्धौ गुरुतरभारतो निमग्ने । देवेषु व्यथिततमेषु तत्प्रियैषी प्राणैषी: कमठतनुं कठोरपृष्ठाम् ॥६॥

क्षुब्ध-आद्रौ(when) the mountain (used as) a churning rodक्षुभित-जल-उदरेin the waters fully stirredतदानींthenदुग्ध-अब्धौof the milk oceanगुरुतर-भारत:because of its (mountain's) heavy weightनिमग्नेsankदेवेषु व्यथिततमेषुthe Devas becoming very worriedतत्-प्रियैषीtheir (the Deva's) wellwisher (Thou)प्राणैषी:assumedकमठ-तनुंa tortoise formकठोर-पृष्ठाम्with a hard back

When the Mandara mountain as a churning rod had fully stirred the waters of the milk ocean to its depth, it sank due to its own weight.  ...