The Ishvara Gita or Śivagītā (Sanskrit: शिवगीता) is an ancient Hindu scripture philosophical text from Padma-Purana in the form of dialogue between Lord Shiva and Shri Rama that took place in Dandaka Aranya forest in Ramagiri mountain on the banks of Godavari river. It deals with topics such as Advaita metaphysics, Bhakti and others 
Śiva-gītā consists of 11 chapters with over 768 verses which deals with topics such as worship of Siva Lingam, Advaita metaphysics, Omni-Potence of Śiva-Liṅga, Bhakti, Significance of OM, Theophany of Śiva (śiva-prādurbhāva-ākhya), forms of Shiva (Aṣṭa Mūrtis) and others 
The Īśvara gītā also shows the influence of the 8-fold (ashtanga) yoga of Patanjali, and of the pashupata sect of Shaivism. Several commentaries on this text are available in manuscript form, including one by vijñānabhikṣu, a 16th-century Hindu polymath.
Primary sources: Sanskrit editions and translations
- Dumont, P.-E. (ed. and tr.) (1934). L’Īśvaragītā: Le Chant de Śiva. Baltimore: Johns Hopkins Press.
- Gupta, Anand Swarup (ed.) (1971). The Kūrma Purāṇa. Varanasi: All-India Kashiraj Trust.
- Nicholson, Andrew J. (tr.) (2014). Lord Siva's Song: The Isvara Gita. New York: SUNY Press.
- Piantelli, Mario (ed. and tr.) (1980). Īśvaragītā, o, Poema del Signore. Parma: L. Battei.
- Tagare, G.V. (tr.) (1982). The Kūrma Purāṇa, Part II. Delhi: Motilal Banarsidass.
- K.V, Anantharaman. Siva Gita A Critical Study.
- K. V. Anantharaman (2010). "Shiva Gita". Wisdom Library.
- K.V, Anantharaman. "Chapter X - Omnipotence of Siva Linga". Siva Gita A Critical Study.
- K.V, Anantharaman. "Chapter VI - Esoteric significance of OM enunciated in Siva Gita.". Siva Gita A Critical Study.
- Īśvara-gītā, its Philosophy as expounded by Vijñāna Bhikṣu, Surendranath Dasgupta, 1940