Thiruvanpurushothamam (Purushotama Perumal Temple), Thirunangur – Literary Mention
Purushotama Perumal temple is revered in Nalayira Divya Prabhandam, the 7th–9th century Vaishnava canon, by Thirumangai Azhwar. The temple is classified as a Divyadesam, one of the 108 Vishnu temples that are mentioned in the book. During the 18th and 19th centuries, the temple finds mention in several works like 108 Tirupathi Anthathi by Divya Kavi Pillai Perumal Aiyangar.
Saint Tirumangai Azhwar has described Lord of the Temple as Lord Rama of Ayodhya in his Mangala Sasanam hymns, saying that benefits would accrue not only to the one chanting the glory of Lord but also to those listening the chanting. The belief is that issues of any complex nature would be solved if one performs Vishnu Sahasranama archana for 48 days continuously without any break and conclude the prayer with special archana and puja on the final day.