Sayyiduna Abu Mas'ud Ansari (may Allah be pleased with him) narrates: The Noble Prophet (peace and blessings be upon him) forbade that the imam stand upon something while the people are behind him, the narrator says: that is, while they are on the ground below him.
Hadith Referenceسنن الدارقطني / كتاب الجنائز / 1881
Hadith Takhrij«أخرجه الدارقطني فى ((سننه)) برقم: 1882،»