Amr bin Salim Al-Zurqi narrates from his mother that she said: "We were in Mina when Ali bin Abi Talib (may Allah be pleased with him) was riding a camel, and the Messenger of Allah (ﷺ) said: 'Indeed, these are days of eating and drinking; none of you should fast.' The people followed him (may Allah be pleased with him) while he was riding the camel, proclaiming this statement loudly among them."
Hadith Referenceمسند الإمام الشافعي / كتاب الحج / 1026
Hadith Takhrijأخرجه أحمد: 1 / 76، 92، 104، 122۔ وابن أبي شيبة (15260)۔ والبيهقي: 4 / 298۔ وصححه ابن خزيمة (2147)۔ والحاكم: (1 / 434، 435)۔