Asim bin Damrah narrates: Some people from Syria came bringing horses and slaves, and they said to Sayyiduna Umar bin Khattab (may Allah be pleased with him): "You should collect zakat from them." So Sayyiduna Umar (may Allah be pleased with him) said: "To my knowledge, no one before me has done this; I will inquire about this." (After that, the narrator mentioned the hadith as previously stated.)
Hadith Referenceسنن الدارقطني / كتاب زكاة / 2065
Hadith Takhrij«أخرجه الدارقطني فى ((سننه)) برقم: 2065 ،»