Sayyidah Aishah (may Allah be pleased with her) narrates: Hafsah (may Allah be pleased with her) and I began the day fasting, and food was given to us as a gift, and the food was tempting, so we ate some of it. Then the Prophet (peace and blessings be upon him) came in to us, and Hafsah (may Allah be pleased with her) got ahead of me in asking, for she was her father's daughter, and said: "O Messenger of Allah, we began the day fasting, then food was given to us and we ate some of it." The Prophet (peace and blessings be upon him) smiled and said: "Fast a day in its place."
Sufyan said: They asked al-Zuhri while I was present: "Is it from Urwah?" He said: "No."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصيام / 8366