Shiva Purana
तत्र मन्त्रस्वरूपन्ते वदामि मुनिसत्तम॥ येन विज्ञातमात्रेण महाज्ञानी भवेन्नरः ॥ १२ ॥
O excellent sage, I shall explain to you the form of the mantra which makes a man possessed of perfect knowledge.
english translation
tatra mantrasvarUpante vadAmi munisattama॥ yena vijJAtamAtreNa mahAjJAnI bhavennaraH ॥ 12 ॥
hk transliteration by Sanscript