Shiva Purana
क्षयवृद्धिविनिर्मुक्तमादिमध्यांतवर्जितम् ॥ तस्य ज्वालासहस्रेण ब्रह्मविष्णू विमोहितौ ॥ ३४ ॥
It is free from decay and growth, and is devoid of beginning, middle and end. Brahma and Vishnu were bewildered by the thousand flames of that fire.
english translation
kSayavRddhivinirmuktamAdimadhyAMtavarjitam ॥ tasya jvAlAsahasreNa brahmaviSNU vimohitau ॥ 34 ॥
hk transliteration by Sanscript