《资治通鉴·后周纪·后周纪四》
周行逢的女婿唐德要求补任官吏，周行逢说： 你的才能不配做官吏，我如今私下照顾你倒是可以的；但如你当官不像样，我不敢用法来宽容你，那亲戚间的情谊就断绝了。 
行逢婿唐德求补吏，行逢曰： 汝才不堪为吏，吾今私汝则可矣。汝居官无状，吾不敢以法贷汝，则亲戚之恩绝矣。 
Zhou Xingfeng's son-in-law Tang De requested to be a civil servant, but Zhou Xingfeng said: "Your ability is not sufficient for the role. I can take care of you privately, but if you behave poorly as a civil servant, I'm afraid I can't use the law to treat you leniently, and our relationship will thus be severed."