The legends described in the Kojiki and the Nihonshoki say that Amaterasu Omikami (the Sun Goddess) granted the 'Sanshu no Jingi' (three sacred objects) to her grandson Ninigi as yorishiro (objects representative of a divine spirit) during 'Tensonkorin' where he descended to earth in order to rule over the country.
記紀の伝承では、三種の神器はアマテラスの神代（よりしろ）として天孫降臨の際に天照大神よりニニギに授けられたとされている。