Although he receives a reward, he feels that it's too little because he has turned his all relatives into enemies and sided with the Emperor, so he argues with Shinzei to make him reconsider it and succeeds in persuading him.
ここで恩賞が授けられるは、義朝は一族全員を敵にまわしてまで天皇にしたがったのに、あまりにも報いるところがすくないことに再考を求め、信西と論争の挙句にこれを認めさせる。