Tirumurai is a twelve-volume compendium of songs or hymns in praise of Shiva in the Tamil language from the 6th to the 11th century CE by various poets in Tamil Nadu. Nambiyandar Nambi compiled the first seven volumes by Appar, Sambandar, and Sundarar as Tevaram during the 12th century. During the course of time, a strong necessity was felt by scholars to compile Shaiva literature to accommodate other works. Tiruvasakam and Tirukovayar by Manickavasagar are included as the eighth, nine parts are compiled as the ninth Tirumurai out of which most are unknown, and the tenth as Tirumandiram by Tirumular, the famous Siddhar. The eleventh is compiled by Karaikal Ammaiyar, Cheraman Perumal and others. The contemporary Chola king was impressed by the work of Nambi and included Nambi's work in the eleventh Tirumurai. Sekkilar's Periya Puranam, composed a century later, contains the life depiction of all the 63 Nayanmars. The response for the work was so tremendous among Shaiva scholars and Kulothunga Chola II that it was included as the 12th Tirumurai. Tirumurai along with Vedas and Shaiva agamas form the basis of Shaiva Siddantha philosophy in South India and Sri Lanka.

Appar also referred to as Tirunavukkaracar or Navukkarasar, was a seventh-century Tamil Shaiva poet-saint. Born in a peasant Shaiva family, raised as an orphan by his sister, he lived about 80 years and is generally placed sometime between 570 and 650 CE. Appar composed 4,900 devotional hymns to the god Shiva, out of which 313 have survived and are now canonized as the 4th to 6th volumes of Tirumurai. One of the most prominent of the sixty-three revered Nayanars, he was an older contemporary of Sambandar.