(50) باب النَّهْىِ أَنْ يُخَصَّ يَوْمُ الْجُمُعَةِ بِصَوْمٍ
Narrated Abu Hurairah:
The Messenger of Allah (ﷺ) as saying: None of you must fast on Friday unless he fasts the day before or the day after. (JA)
Reference (JA): Sunan Abi Dawud 2420 (JA)
In-book reference (JA): Book 14, Hadith 108 (JA)
English translation (JA): Book 13, Hadith 2414 (JA)