Charak Samhita
अनादिः पुरुषो नित्यो विपरीतस्तु हेतुजः। सदकारणवन्नित्यं दृष्टं हेतुजमन्यथा ॥५९॥
Thus, the absolute soul is without a beginning or an end, but the Purusha (i.e. the combination of 24 elements) being caused by something is not so i.e. it has a beginning and is ephemeral. All that exists without cause is eternal. Anything produced from a cause is ephemeral.
english translation
anAdiH puruSo nityo viparItastu hetujaH। sadakAraNavannityaM dRSTaM hetujamanyathA ॥59॥
hk transliteration by Sanscript