صحيح مسلم
Sahih Muslim
كتاب الصيام
The Book of Fasting
باب كَرَاهِيَةِ صِيَامِ يَوْمِ الْجُمُعَةِ مُنْفَرِدًا:
Chapter: It is disliked to single out Friday for fasting, unless it coincides with a day that one customarily fasts
Hadith 1144
This hadith is listed as number 2684 in Maktaba Shamila
وحَدَّثَنِي أَبُو كُرَيْبٍ ، حَدَّثَنَا حُسَيْنٌ يَعْنِي الْجُعْفِيَّ ، عَنْ زَائِدَةَ ، عَنْ هِشَامٍ ، عَنِ ابْنِ سِيرِينَ ، عَنْ أَبِي هُرَيْرَةَ رَضِيَ اللَّهُ عَنْهُ ، عَنِ النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ ، قَالَ : " لَا تَخْتَصُّوا لَيْلَةَ الْجُمُعَةِ بِقِيَامٍ مِنْ بَيْنِ اللَّيَالِي ، وَلَا تَخُصُّوا يَوْمَ الْجُمُعَةِ بِصِيَامٍ مِنْ بَيْنِ الْأَيَّامِ ، إِلَّا أَنْ يَكُونَ فِي صَوْمٍ يَصُومُهُ أَحَدُكُمْ " .
Abu Hurairah (RA) reported Allah's Apostle (ﷺ) as saying: Do not single out the night (preceding) Friday among the nights for prayer and do not single out Friday among days for fasting but only when anyone among you is accustomed to fast (on dates) which coincide with this day (Friday).
