Shiva (Śiva, 'the Auspicious One') is the supreme deity of Shaivism and one of the principal gods of the Hindu Trimurti, along with Brahma and Vishnu. In the Rigveda (10.90), the Purusha Sukta hints at a cosmic being whose sacrifice creates the universe, a concept later associated with Shiva as the supreme consciousness. The Shvetashvatara Upanishad (3.8–11) explicitly identifies Rudra-Shiva as the supreme lord who governs the world through his maya. The name 'Shiva' is derived from the Sanskrit root 'śī' meaning 'in whom all things lie' or 'śiva' meaning 'auspicious'. As Rudra, he is the fierce storm god, while as Shankara, he is the benevolent bestower of happiness. The Maha Mrityunjaya Mantra (Rigveda 7.59.12) is addressed to Tryambaka (Shiva) for healing and liberation. The primary beej mantra for Shiva is 'Om Namah Shivaya', which contains the panchakshara (five syllables) 'Na-Ma-Śi-Vā-Ya'. According to the Mantra Mahodadhi (1.1–3), this mantra is the essence of all mantras and directly represents Shiva's five aspects: creation, preservation, destruction, concealment, and grace. The phoneme 'Om' (praṇava) is considered the primordial sound from which the universe emanates, and Shiva is identified with this sound in the Mandukya Upanishad. The traditional purpose of chanting Shiva mantras includes liberation (moksha), removal of obstacles, healing, and spiritual awakening. The Shiva Purana (Vidyeshvara Samhita 16.1–5) states that chanting 'Om Namah Shivaya' even once with devotion destroys all sins. The recommended chanting context is during the brahma muhurta (pre-dawn hours), facing north or east, with a rudraksha mala. The ideal count is 108 repetitions daily, or 1,25,000 times for purashcharana. On Maha Shivaratri, continuous chanting throughout the night is prescribed. Cautions: The Maha Mrityunjaya Mantra should not be chanted casually without proper initiation (diksha) as per the Devi Mahatmya (11.33–35), which warns of potential harm if misused. Beginners should start with the simpler 'Om Namah Shivaya' under the guidance of a guru. Shiva is also worshiped through the Rudra Gayatri (Om Tatpurushaya Vidmahe Mahadevaya Dhimahi Tanno Rudrah Prachodayat), found in the Rigveda. The Lalita Sahasranama (verse 272) refers to Shiva as 'Shivaduti' (one who has Shiva as messenger), highlighting his role as the consort of Shakti. In iconography, Shiva is depicted with matted hair, a third eye, blue throat (Neelakantha), seated on a tiger skin in meditation, or as Nataraja performing the cosmic dance. His symbols—the trishula (trident), damaru (drum), crescent moon, Ganga flowing from his hair, serpent around his neck, and vibhuti (sacred ash)—each carry deep philosophical meanings. The trishula represents the three gunas, the damaru the rhythm of creation, and the crescent moon the cyclical nature of time. Worship of Shiva is pan-Indian, with major centers at Kashi (Varanasi), Kedarnath, and Somnath. Festivals include Maha Shivaratri, Shravana Somvar, and Rudra Abhishekam, where the Shiva Linga is bathed with milk, water, and bilva leaves.
Ascetic form with matted hair, third eye, blue throat (Neelakantha), seated on tiger skin in meditation, or as Nataraja in cosmic dance.