His loyalty can be seen in the event as follows; when Chugu (Empress) Teishi, who had escaped from Dairi (the Inner Palace) just before the execution of brothers FUJIWARA no Korechika and FUJIWARA no Takaie in the spring, on March 30, 996, all the Shokei (the top court officials in charge) other than TAIRA no Korenaka, who had the title of Hongu no daibu (chief of the office of the Imperial Palace), said 'it is better not to go along with her for fear of giving offense,' while Toshikata purposefully acted as a squire.
それは長徳2年（996年）春3月4日、兄弟藤原伊周・藤原隆家の断罪を間近に控えて内裏を退出した中宮定子の二条北宮行啓に、本宮大夫平惟仲以外の上卿が「悉く障りを申し不参」の中で、俊賢は敢えて扈従したことに見出されよう。