Hadith 1139 - The Book of Fasting - Sahih Muslim - صحيح مسلم - Collection of Actions, Sayings and Teachings of Prophet Muhammad (صلى الله عليه و سلم) - Kutub as-Sittah

13. The Book of Fasting - كتاب الصيام

22) Chapter: The prohibition of fasting on the two days of 'Id

Ziyad b. Jubair reported that a person came to Ibn 'Umar (Allah be pleased with them) and said:

I had taken a vow that I would fast on the day (but it accidentally) synchronises with the day of Adha or the day of Fitr. Thereupon Ibn 'Umar (Allah be pleased with him) said: Allah, the Exalted, has commanded fulfilling of the vow, but the Messenger of Allah (ﷺ) has forbidden the observance of fast on this day.

Reference: 1139
English reference: Book 6, Hadith 2537
In-book reference: Book 13, Hadith 181
Grade: Sahih
Read this hadith from Darussalam Collection

22) باب النَّهْىِ عَنْ صَوْمِ، يَوْمِ الْفِطْرِ وَيَوْمِ الأَضْحَى ‏‏

وَحَدَّثَنَا أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ، حَدَّثَنَا وَكِيعٌ، عَنِ ابْنِ عَوْنٍ، عَنْ زِيَادِ بْنِ جُبَيْرٍ، قَالَ جَاءَ رَجُلٌ إِلَى ابْنِ عُمَرَ - رضى الله عنهما - فَقَالَ إِنِّي نَذَرْتُ أَنْ أَصُومَ يَوْمًا فَوَافَقَ يَوْمَ أَضْحَى أَوْ فِطْرٍ ‏.‏ فَقَالَ ابْنُ عُمَرَ رضى الله عنهما أَمَرَ اللَّهُ تَعَالَى بِوَفَاءِ النَّذْرِ وَنَهَى رَسُولُ اللَّهِ صلى الله عليه وسلم عَنْ صَوْمِ هَذَا الْيَوْمِ ‏.‏