Shiva Purana
अतीताः खल्वसंख्याता ब्रह्माणो हरयो भवाः ॥ अनागतास्त्वसंख्यातास्त्वदाज्ञानुविधायिनः ॥ १७ ॥
Innumerable Brahmās, Viṣṇus and Śivas have passed by. Such innumerable ones are yet to be born, these carry out your behests.
english translation
atItAH khalvasaMkhyAtA brahmANo harayo bhavAH ॥ anAgatAstvasaMkhyAtAstvadAjJAnuvidhAyinaH ॥ 17 ॥
hk transliteration by Sanscript