Shiva Purana

[6] The Shiva Purana contains chapters with Shiva-centered cosmology, mythology, and relationship between gods, ethics, yoga, tirtha (pilgrimage) sites, bhakti, rivers and geography, and other topics.

[10][2][11] The text is an important source of historic information on different types and theology behind Shaivism in early 2nd-millennium CE.

[12] The oldest surviving chapters of the Shiva Purana have significant Advaita Vedanta philosophy,[6] which is mixed in with theistic elements of bhakti.

[18] Shiva is atman (soul) A pathologist diagnoses correctly, and cures illness through medicines.

220–3, Nos, 298–299 about another manuscript of the Siva Purana, which is divided into Two Khandas (Parts), the Purvakhanda and the Uttarakhanda.

[22] The text discusses goddesses and gods, dedicates parts of chapters praising Vishnu and Brahma, as well as those related to avatars such as Krishna.

[25] The text also presents the Brahman as satcitananda theme, with masculine and feminine Shiva-Shakti as a unity, and perception of plurality-discrimination as a form of nescience.

[25] These ideas, states Klaus Klostermaier, are similar to those found in Devi-related Puranas and Shakti Literature.

The Creation Of The Cosmic Ocean And The Elements, folio from the Shiva Purana , c. 1828 .
The Shiva Purana, in verses 6.23-6.30 of Vayaviya Samhita, states that Om (P ranava ) expresses Shiva, it includes within it Brahma, Vishnu, Rudra and Shiva, there is Purusha in everything, nothing is smaller nor bigger than Shiva-Atman. [ 21 ]