《新五代史·列传·杂传第三十四》
康福为将没有别的才能，擅长各种蕃夷语言，唐明宗曾召他进便殿，向他打听外族的情况，康福就用蕃语回答。
福为将无佗能，善诸戎语，明宗尝召入便殿，访以外事，福辄为蕃语以对。
Kangfu had no other talents as a general, but he was good at all kinds of foreign languages. Tang Mingzong once summoned him into the side hall and asked him about the foreign tribes, and Kangfu answered in foreign languages.