This book Yatindramatadipika or the Light of the System of Sri Ramanuja is an exposition of the teachings of Visishtadvaita in its aspects of metaphysics, morals and religion familiarly known as Tattva Hita and Purusartha. It is one of the best handbooks for the study of Visishtadvaita and was composed by Srinivasarya, a well-known Visistadvaitic philosopher of 17th century.