Jagdguru Sri Ramanujacharya himeslf he initiated the Sri Yatirajadasar family members and gave Pancha Samskara deeksha to Sri Vishvaksena bhattar. These five samskaras are Tapa, Pundra, Nama, Manta and Yaga.
For the Yaga i.e. daily worship of lord Sri Ramanujacharya gave the murties worshipped by himself to Sri Yatirajadasr family. Eventoday many Griha Archa murties are being worshipped in the Tirumaligai Kovilalwar of Sri Yatirajadasar family.