(63) بَابُ صَوْمِ يَوْمِ الْجُمُعَةِ، فَإِذَا أَصْبَحَ صَائِمًا يَوْمَ الْجُمُعَةِ فَعَلَيْهِ أَنْ يُفْطِرَ
Narrated Abu Huraira:
I heard the Prophet (ﷺ) saying, "None of you should fast on Friday unless he fasts a day before or after it." (ES)
Reference (ES): Sahih al-Bukhari 1985 (ES)
In-book reference (ES): Book 30, Hadith 92 (ES)
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 3, Book 31, Hadith 206 (ES)