"Myobojojokanroku" (A Commentary of the Ritsuryo Codes) published in the Kamakura period quotes unknown or lost writings of "Seiji Yoryaku" (Brief Outline of Government) written by KOREMUNE no Masasuke, a lawyer in the mid-Heian period (Sekkanseiji period [regency period]), which present the view that "there is almost no reason to return the territory after "kokorozashi ataeru" to others" as a general rule (prevailing theory).
鎌倉時代の『明法条々勘録』に引用されている平安時代中期（摂関政治期）の明法家惟宗允亮の著作『政事要略』逸文には、「志与他人之後専無返領之理」という見解が出現しそれが通規（通説）であると述べている。