《资治通鉴·唐纪·唐纪六十八》
懿宗听从李胶的建议，诏命徐州依旧置观察使，统辖徐州、濠州、宿州三州，泗州置团练使，从徐州改隶于淮南。
诏从之，徐州依旧为观察使，统徐、濠、宿三州，泗州为团练使，割隶淮南。
Emperor Yizong accepted Li Jiao's proposal and decreed that Xuzhou would remain under an observation envoy, commanding the three states of Xuzhou, Haozhou, and Suzhou, and that Sizhou would set up a militia, and change command from Xuzhou to Huainan.