It was described in detail in an article about the early times of the split of the sect in section six of "Kurinohana" (flower of chestnuts) which was spoken by the machi-shu (towns people) of Miya-machi in Azuchi.
安土の宮町衆が説いた『栗の華』六節に記載されていた宗派両断始期に詳しく掲載の物。