Sulayman bin Yasar narrates from Hamzah al-Aslami (may Allah be pleased with him) that he saw a man at Mina going around on his brownish camel announcing: "Do not fast on these days, for they are days of eating and drinking" while the Messenger of Allah (peace and blessings be upon him) was present among the people at that time.
Hadith Referenceالمعجم الكبير للطبراني / باب الحاء / 2974