 He went on to form his own institution, "Bochasanwasi Swaminarayan Sanstha" or "BSS" (now BAPS) claiming Gunatitanand Swami was the rightful spiritual successor to Swaminarayan.Excommunication as it exists in Christian faiths does not exist in Islam.The nearest approximation is "takfir", a declaration that an individual or group is "kafir" (or "kuffar" in plural), a non-believer.