Shiva Purana
अचेतनत्वात्कालादेश्चेतनत्वेपि चात्मनः ॥ सुखदुःखानि भूतत्वादनीशत्वाद्विचार्यते ॥ १५ ॥
Because time and other things are unconscious, the self is also conscious. Happiness and pain are considered to be past and present.
english translation
acetanatvAtkAlAdezcetanatvepi cAtmanaH ॥ sukhaduHkhAni bhUtatvAdanIzatvAdvicAryate ॥ 15 ॥
hk transliteration by Sanscript