This famous Śiva Dhyana Mantra is from Śiva Mahāpurāṇam, Vidyeśvara-saṃhitā, 20.52
🍁 Śiva Dhyāna Mantra 🍁
ध्यायेन्नित्यं महेशं रजतगिरिनिभं चारुचंद्रा वतंसं रत्नाकल्पोज्ज्वलांगं परशुमृगवराभीतिहस्तं प्रसन्नम् । पद्मासीनं
समंतात्स्थितममरगणैर्व्याघ्रकृत्तिं वसानं विश्वाद्यं विश्वबीजं
निखिलभयहरं पंचवक्त्रं त्रिनेत्रम् ॥
dhyāyennityaṃ maheśaṃ rajatagirinibhaṃ cārucaṃdrā vataṃsaṃ ratnākalpojjvalāṃgaṃ paraśumṛgavarābhītihastaṃ prasannam | padmāsīnaṃ
samaṃtātsthitamamaragaṇairvyāghrakṛttiṃ vasānaṃ viśvādyaṃ viśvabījaṃ
nikhilabhayaharaṃ paṃcavaktraṃ trinetram ||
~ Śivapurāṇam, Vidyeśvara-saṃhitā, 20.52
He shall meditate on Śiva always in the following way:— He is like a
silver mountain. He wears the beautiful moon, on his forehead. His
limbs are resplendent with ornaments of gems. He holds the axe, the
deer, the Mudrā of boon and the Mudrā of freedom from fear in His four
hands. He is joyful. He is seated in the lotus pose. The assembled
Devas stand around Him and offer prayers. He wears the hide of the
tiger. He is the primordial Being, the seed of the universe. He
dispels all fears. He is the three-eyed lord with five faces.
