Pisharadi has been affected by rheumatism. Unable to see his pain, by yogic strength and by way of Gurdakshina, Bhattathri is said to have taken the disease upon himself and relieved his guru. To relieve Narayana of this disease, Ezhuthachan, a Malayalam poet and Sanskrit scholar hinted- "meen thottu koottuka" (start with the fish). On the face of it, the suggestion would seem offensive to an orthodox Malayali Brahmin, who are strict vegetarians. However, Bhattathiri, understanding the hidden meaning, decided to present the various incarnations of Vishnu starting with the fish, as narrated in the "Bhagavata Purana" in a series of Dasakas (groups of ten slokas). Upon reaching Guruvayur, he started composing one dasaka a day in the presence of the Lord. The refrain in last sloka of every dasaka is a prayer to him to remove his ailments and sufferings. Every day, he sang 10 shlokas on Sri Guruvayoorappan. Each set of 10 poems ends with a prayer for early cure. In 100 days he finished his compositions, and his condition gradually improved day by day. On 27 November 1587 when he finished the last dashakam ("Ayuraarogya Sowkhyam") he was completely cured. The 100th canto composed on that day gives a graphic description of this form of the Lord from the head to the foot. On that day he had a vision of the Lord in the form of Venugopalan. He was 27 then. He was a propounder of Purva Mimamsa, Uttara Mimamsa and Vyakarana.