His magnum opus, the Tirumantiram, consisting of over 3000 verses, forms a part of the key text of the Tamil Shaiva Siddhanta compilation called the Tirumurai.
The scholar and lexicographer S. Vaiyapuripillai, however, suggested that he probably belonged to the beginning of the eighth-century CE, pointing out that Tirumular could not very well be placed earlier given that he appears to refer to the Tevaram hymns of Sambandar, Appar, and Sundarar, that he used "very late words" and that he made mention of the weekdays.
After spending 5 years at Mount Kailash, he undertook a journey under the order of Shiva to Tamilakam to meet his contemporary, the sage Agastya in Pothigai Hills.
After meeting Agastya, he went to Chidambaram, and after worshiping Shiva at the Nataraja Temple, he was about to return to Mount Kailash.
The saint is regarded to have engaged in meditation under a peepal tree in Thiruvavaduthurai, receiving holy hymns in Tamil.