For Iyengars, who follow the Vishishtadvaita philosophy propounded by Bhagavad Ramanuja, this ritual is a manifestation of Kaimkaryam (service). It is performed with the sentiment that we are serving the souls who have paved the way for our existence, viewing them as devotees of Sriman Narayana.

Before searching for a PDF, one must understand the steps involved. A standard Iyengar PDF will include these sections:

Tharpanam literally means "to satisfy" or "to please". It is considered one of the five daily great sacrifices (Pancha Maha Yagnas) to repay the debt owed to ancestors. Performing this ritual on Amavasya (New Moon day) is believed to: Bring peace to the souls of departed ancestors.

While ancient texts suggest sunrise, most traditions now perform it at noon or after 8:30 AM.

There are several types of tharpanams: – 1. Gunda (kuzhi) tharpanam- the tharpanam that is done in the first ten days of death. 2. TRS Iyengar Tharpana Procedure and Mantras Guide | PDF - Scribd

Unlike other communities, the Iyengar Samkalpam includes specific references to Sri Bhashyakara (Ramanujacharya) and the Divya Desams . You must state your Gothra (lineage), Sakha (branch of Vedas—usually Krishna Yajur Veda for Iyengars), and the specific lunar date.