Devibhagavatapurana 4.25.54

4.25.54

kāminyā preritaḥ śambho muktidaṃ tvāṃ jagatpate |
jānāmi duḥkhadaṃ śambho saṃsāraṃ duḥkhasādhanam ||

O S’amkara! This world and its concerns are the abode of all sorrows; it is the cause that brings in all sorts of pains and troubles, and it is transient and will go to destruction. I know all these; still my mind does not desist from it.