اِذا جَاءَکُمْ کَرِیْمُ قَوْمٍ فَاَکْرِمُوهُ
If the nobleman of a people comes to you, honour him
The 30th of the 40 hadiths gathered by Shah Waliullah ad-Dehlawi in Shah Waliullah's Forty Hadith, given below in the original Arabic with an English translation and its reference.
اِذا جَاءَکُمْ کَرِیْمُ قَوْمٍ فَاَکْرِمُوهُ
If the nobleman of a people comes to you, honour him
Text from the open hadith-api dataset. Hadith numbering follows that edition and can differ slightly from a printed copy — check the Arabic against a trusted mushaf of hadith before relying on a reference.