In these a Kulothunga I inscription is highlighted in support.
a sample...
South Indian Inscriptions III. 70 pp. 150.
Line 10.. in the Eighteenth year of Kulothunga Chola deva, by the Order of the adhikarin Nishadharajar, manager of the Temple God Thiruvarangadevar, the following was given in writing to Arayan Garudazhwan @ Kaalingarayar, by us (the pujaris) Kanmis of the God, as members of the Committee of the Sri Vaishnava ::
On the day of Thaer thirunal (Charriot Festival) and Panguni celebration ( IT WILL BE INTERESTING TO NOTE WHY PANGUNI FESTIVAL .. !! ) after theetha prasadham - andriraa (THAT NIGHT ) - Under the Sacred Punnai tree Ezhundaruli-irundhu - THETTARULIDHAL KAETTARLUM PODHU ( WHILE LISTENING TO THETTALIDHAL - of KULASEKARA AZHWAR !!) .. is the essense of this inscriptions..
Ending :: We, the Great assembly of TIRUVARANGAM, shall be bound to continue this as long as the moon and the sun exist.
this is placed under the protection of the Sir-Vaishnavas !!