Shiva Purana
तच्च तत्कारणं चैव तत्कालकरणानि च ॥ तद्भेदतारतम्यं च वक्तुमर्हसि तत्त्वतः ॥ ४ ॥
That is the cause of the universe and the causes of the universe at that time. You should tell me in detail the differences and differences between them.
english translation
tacca tatkAraNaM caiva tatkAlakaraNAni ca ॥ tadbhedatAratamyaM ca vaktumarhasi tattvataH ॥ 4 ॥
hk transliteration by Sanscript