two I

 When Nammalvar was ready to go to vaikunta loka (attaing Salvation), Madhurakavi asked Nammalvar with full of tears what to do next. Nammalvar advised Madhurakavi to boil the waters of Tamraparni and he said that an idol will form during boiling of the water. Madhurakavi did as per Nammalvar's advice. When he had boiled the waters of Tamraparni, He got an idol of Bhagavad Ramanuja. He was surprised to see that the idol was different from what he had expected. He went to Nammalvar with the idol and the latter told him that this idol was Bhavishyadhacharya (Future Guru) and that he will be born 4000 years from then. He again advised to boil the waters of Tamraparni. Madhurakavi once again boiled the waters of Tamraparni and finally got the idol of Nammalvar.