Shiva Purana
अक्षरं परमं ब्रह्म ह्यसच्च सदसच्च यत् ॥ अनादिमध्यनिधनमप्रतर्क्यं सनातनम् ॥ १७ ॥
He is the imperishable great Brahman, the Sat-Asat and Asat; devoid of beginning, middle and end, incomprehensible and eternal.
english translation
akSaraM paramaM brahma hyasacca sadasacca yat ॥ anAdimadhyanidhanamapratarkyaM sanAtanam ॥ 17 ॥
hk transliteration by Sanscript