Shiva Purana
अप्राप्य तन्निवर्तंते वाच्यस्त्वेकाक्षरेण सः ॥ एकाक्षरादकाराख्यादात्मा ब्रह्माभिधीयते ॥ ४५ ॥
Without attaining that they turn away He is to be spoken of in one syllable From the one syllable known as the syllable the Self is called Brahman.
english translation
aprApya tannivartaMte vAcyastvekAkSareNa saH ॥ ekAkSarAdakArAkhyAdAtmA brahmAbhidhIyate ॥ 45 ॥
hk transliteration by Sanscript