Harivamsha 7.47

7.47

tair iyaṃ pṛthivī tāta sasamudrā sapattanā
yathāpradeśam adyāpi sarvataḥ paripālyate |
pūrṇaṃ yugasahasraṃ hi paripālyā nareśvaraiḥ
prajābhis tapasā caiva saṃhārānte ca nityaśaḥ //

By them, dear friend, this earth with its oceans and cities / is protected on every side in its proper regions even today; / for a complete thousand yugas it is to be protected by rulers of men, / by subjects, through ascetic heat, and continually at the end of dissolution.