English translation
1994. Narrated Ziyād bin Jubair: A man went to Ibn 'Umar رضي الله عنهما and said, "A man vowed to observe Ṣaum (fast) one day (the subnarrator thinks that he said that the day was Monday), and that day happened to be 'Eid day." Ibn 'Umar said, "Allāh orders vows to be fulfilled and the Prophet ﷺ forbade Ṣaum on this day (i.e., 'Eid)."
