When Munemori was told secretly, on August 1, that MINAMOTO no Yoritomo had secretly suggested to In (Goshirakawa) that 'If we are not allowed to annihilate the Taira family, the Minamoto clan and the Taira clan should serve together as we did in the past'; however, Munemori refused by responding, 'All of our family members, including our children and grandchildren should fight and die for Yoritomo to the last one' in keeping with Kiyomori's dying will ("Gyokuyo").
8月1日に源頼朝が密かに院に奏上して「もし平家を滅ぼしてはならぬという事であれば、昔のように源氏・平氏が相並んで召し仕えるべきである」と申し入れてきたことを、内々に宗盛に告げたところ、亡き清盛の遺言として「我が子や孫にいたるまで、最後の一人になっても骸を頼朝の前に晒すべし」と述べて、これを拒否している（『玉葉』）。