Shiva Purana
ब्रह्मरन्धांतमुच्चार्य ध्यायेदोंकारगोचरम् ॥ शुद्धस्फटिकसंकाशं देवं निष्कलमक्षरम् ॥ ४२॥
One should chant the Brahmarandhānta and meditate on the oṁkāra. The Lord is pure and infallible, resembling pure crystal.
english translation
brahmarandhAMtamuccArya dhyAyedoMkAragocaram ॥ zuddhasphaTikasaMkAzaM devaM niSkalamakSaram ॥ 42॥
hk transliteration by Sanscript