Another example of a non-reciprocal "free" gift is provided by British anthropologist James Laidlaw (2000). He describes the social context of Indian Jain renouncers, a group of itinerant celibate renouncers living an ascetic life of spiritual purification and salvation. The Jainist interpretation of the doctrine of "ahimsa" (an extremely rigorous application of principles of nonviolence) influences the diet of Jain renouncers and compels them to avoid preparing food, as this could potentially involve violence against microscopic organisms. Since Jain renouncers do not work, they rely on food donations from lay families within the Jain community. However, the former must not appear to be having any wants or desires, and only very hesitantly and apologetically receives the food prepared by the latter."Free" gifts therefore challenge the aspects of the Maussian notion of the gift unless the moral and non-material qualities of gifting are considered. These aspects are, of course, at the heart of the gift, as demonstrated in books such as Annette Weiner's (1992) "Inalienable Possessions: The Paradox of Keeping While Giving".