Shiva Purana
अपरं ब्रह्मरूपं च परं ब्रह्मात्मकं तथा ॥ केचिदाहुर्महादेवमनादिनिधनं परम् ॥ ३ ॥
About the great lord, without beginning or death, some say he is Aparabrahmarūpa, some say he is Parabrahmarūpa.
english translation
aparaM brahmarUpaM ca paraM brahmAtmakaM tathA ॥ kecidAhurmahAdevamanAdinidhanaM param ॥ 3 ॥
hk transliteration by Sanscript