梵名 ?rauta-sūtra。古印度吠陀祭儀綱要書,與「家庭經」同屬吠陀補助文獻─劫經(梵 Kalpa-sūtra)之一部分,且與梵書、森林書等有密切關係。約成書於西元前四○○至二○○年間,以富有哲思之簡潔散文體,敘述隨聞祭儀之過程。此類隨聞祭儀一般系以三個祭火所組成之公開祭典,舉凡初為家長、每日朝夕、新月、滿月、初穗等皆有祭儀,供物有穀類、牛乳、奶油、犧牲等。各吠陀中均有隨聞經,其內亦皆詳載有關司祭官及祭典等之規定。[J.C. Heersterman: The ancient Indian royal consecration''''s-Graven image, 1957; ?rautako?a, Encyclopaedia of Vedic sacrificial ritual comprising the two complementary sections the Sanskrit section vol. I, by C.G. Kashikar; the English section vol. I, part 1, by R.N. Dandekar, Poona 1958](參閱「家庭經」4084) p6354