Wording 'After my death, I shall not require a doto (temple and pagoda) or a discharge of filial duties, just cut off Yoritomo's head and offer it before my tomb' was described in "Heike Monogatari" (The tale of the Heike), and some question its credibility as it is just a tale.
「我の死後は堂塔も孝養も要らぬ、ただ頼朝の首を刎ね我が墓前に供えよ」は平家物語に記された文言であり、物語ゆえにかその真偽を疑う声もある。