Pramanas for Deputing Ritviks
These śāstra vidhis (regulations) are very important, because they specify that the use of ritviks is only in the case of a departed guru who is unable to complete the initiation or sacrifice started. New proceedings on behalf of a departed ācārya may not be conducted by ritviks. To interpret this as extending to not merely completion but the performance of new proceedings has the fault of ativyāpti, an overly broad application of a rule or definition, including things that are not supposed to be included.