It is narrated from Abu Huraira (may Allah be pleased with him) that Umar bin Khattab (may Allah be pleased with him) said this or something similar in meaning to Abu Bakr (may Allah be pleased with him).
Hadith Referenceمسند الإمام الشافعي / كتاب الزكاة / 680
Hadith Takhrijصحيح : اخرجه البيهقي في المعرفة السنن والآثار (5027) ۔ واحمد: (1/ 47)۔