Sayyiduna Ismah (may Allah be pleased with him) said: The Messenger of Allah (peace and blessings be upon him) saw a man walking in the graveyard wearing his sandals, and he said: "O wearer of the tanned-leather sandals, take off your sandals."
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 14567