Avatars of Shiva
Although Puranic scriptures contain occasional references to avatars of Shiva, the idea is not universally accepted in Saivism. As an avatar requires residence in a womb, Shiva as ayonija (not of a womb) cannot manifest himself as an avatar. The Linga Purana speaks of twenty-eight forms of Shiva which are sometimes seen as avatars. In the Shiva Purana there is a distinctly Saivite version of a traditional avatar myth: Shiva brings forth Virabhadra, one of his terrifying forms, in order to calm Narasimha, an avatar of Vishnu. When that fails, Shiva manifests as the human-lion-bird Sharabha. The story concludes with Narasimha becoming a devotee of Shiva after being bound by Sharabha. However, Vaishnava followers including Dvaita scholars, such as Vijayindra Tirtha (1539–95) refute this Shaivite view of Narasimha based on their reading of Sattvika Puranas and Śruti texts.
The monkey-god Hanuman who helped Rama – the Vishnu avatar is considered by some to be the eleventh avatar of Rudra (Shiva). Some regional deities like Khandoba are also believed by some to be avatars of Shiva.
Other stated avatars of Shiva, according to some sources, are 8th century non-dualist Vedanta philosopher (Advaita Vedanta) Adi Shankara. He was named "Shankara" after Lord Shiva and is considered by some to have been an incarnation of the god and Virabhadra who was born when Shiva grabbed a lock of his matted hair and dashed it to the ground. Virabhadra then destroyed Daksha's yajna (fire sacrifice) and severed his head as per Shiva's instructions.
In Dasam Granth, Guru Gobind Singh have mentioned two avtars of Rudra: Dattatreya Avtar and Parasnath Avtar.
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