Filling the most glaring gap in Shrivaishnava scholarship, this book deals with the history of interpretation of a theological concept of self-surrender-prapatti in late twelfth and thirteenth century religious texts of the Shrivaishnava community of South India. This original study shows that medieval sectarian formation in its theological dimension is a fluid and ambivalent enterprise, where conflict and differentiation are presaged on "sharing," whether of a common canon, saint or rituals or two languages (Tamil and Sanskrit), or of a "meta-social" arena such as the temple.