Shiva Purana
तत्कुर्वन्स यतिस्सम्यक्छिवध्यानपरो भवेत् ॥ नियमेन मुने नित्यं प्रणवासक्तमानसः ॥ ११ ॥
O sage, practising it regularly the ascetic shall be attached to Praṇava and be well-engaged in the meditation on Śiva.
english translation
tatkurvansa yatissamyakchivadhyAnaparo bhavet ॥ niyamena mune nityaM praNavAsaktamAnasaH ॥ 11 ॥
hk transliteration by Sanscript