《新唐书·列传·卷三十六》
现在要放弃丰州，那么黄河附近的土地全部被异族占领，灵州、夏州也不会安全，是对国家不利的。 
今而废之，则河傍地复为贼有，而灵、夏亦不足自安，非国家利也。 
If Fengzhou is abandoned now, the land near the Yellow River will be completely occupied by foreigners, and Lingzhou and Xiazhou will not be safe either. This would be detrimental to the country.