《后漢書(shū)》卷三十五《鄭玄傳》
「以山東無(wú)足問(wèn)者,乃西入關(guān),因涿郡盧植,事扶風(fēng)馬融。……玄因從質(zhì)諸疑義,問(wèn)畢辭歸。融喟然謂門人曰:『鄭生今去,吾道東矣。』」唐·李賢注:「《前書(shū)》曰:『田何授《易》于丁寬,學(xué)成,寬東歸,何謂門人曰:《易》東矣?!弧?/span>
「以山東無(wú)足問(wèn)者,乃西入關(guān),因涿郡盧植,事扶風(fēng)馬融。……玄因從質(zhì)諸疑義,問(wèn)畢辭歸。融喟然謂門人曰:『鄭生今去,吾道東矣。』」唐·李賢注:「《前書(shū)》曰:『田何授《易》于丁寬,學(xué)成,寬東歸,何謂門人曰:《易》東矣?!弧?/span>