On August 15 (June 25 under the old lunar calendar), Yoritomo asked the Imperial Court for an imperial decree to search for and kill Yasuhira and gathered gokenin to Kamakura, but the imperial sanction was not issued.
25日に泰衡追討の宣旨を朝廷に求め、御家人を鎌倉に集めるが、勅許は下されなかった。