Sahih Muslim 2684
صحيح مسلم#2684Sahihوَحَدَّثَنِي أَبُو كُرَيْبٍ، حَدَّثَنَا حُسَيْنٌ، - يَعْنِي الْجُعْفِيَّ - عَنْ زَائِدَةَ، عَنْ هِشَامٍ، عَنِ ابْنِ سِيرِينَ، عَنْ أَبِي هُرَيْرَةَ، - رضى الله عنه - عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ " لاَ تَخْتَصُّوا لَيْلَةَ الْجُمُعَةِ بِقِيَامٍ مِنْ بَيْنِ اللَّيَالِي وَلاَ تَخُصُّوا يَوْمَ الْجُمُعَةِ بِصِيَامٍ مِنْ بَيْنِ الأَيَّامِ إِلاَّ أَنْ يَكُونَ فِي صَوْمٍ يَصُومُهُ أَحَدُكُمْ " .
Abu Huraira (Allah be pleased with him) 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)
Scholarly Authentication
The label above is the grade most of these scholars gave — one dissenting opinion no longer speaks for all of them. If any scholar calls a narration fabricated, that verdict is shown instead, whatever the others say. Each scholar's own wording:
Every narration in Sahih Muslim is accepted as Sahih (authentic) by the established status of the book.
In-book reference: 13:190