It is narrated from Ziyad bin Jubair, he says: I saw a man who came to Sayyiduna Abdullah bin Umar (may Allah be pleased with him) and said: I have vowed to fast every Wednesday, and now this day has fallen on Eid al-Adha or Eid al-Fitr, so what should I do? Sayyiduna Ibn Umar (may Allah be pleased with them both) said: Allah Almighty has commanded the fulfillment of vows, but the Messenger of Allah (peace and blessings be upon him) has forbidden fasting on the day of sacrifice (i.e., the tenth of Dhul-Hijjah).
Hadith Referenceالفتح الربانی / كتاب الأيمان والنذور / 5389
Hadith Gradingمحدثین:صحیح
Hadith Takhrij«أخرجه البخاري: 6705، ومسلم: 1139، (انظر مسند أحمد ترقيم الرسالة: 4449 ترقیم بيت الأفكار الدولية: 4449»
Brief Explanation
Benefits: … This hadith pertains to the person who vowed to fast on a specific day, but coincidentally that day turned out to be an Eid. If a person knowingly vows to fast on the day of Eid, his vow will consist of disobedience to Allah Ta‘ala, and it will not be fulfilled.