رِيَاضُ الصَّالِحِينَ
Riyad as-Salihin 1763
The Book of the Prohibited actions
Abomination of Selecting Friday for Fasting
وَعَنْ أم المؤمنين جويرة بنت الحارس رَضِيَ اللَّه عَنْهَا أَنَّ النَّبِيَّ صَلَّى اللَّه عَلَيْهِ وَسَلَّمَ دَخَلَ عَلَيْهَا يَوْمَ الْجُمُعَةِ وهي صَائِمَةٌ، فَقَالَ: " أَصُمْتِ أَمْسِ؟" قَالَتْ: لاَ، قَالَ: " تُرِيدِينَ أَنْ تَصُومِي غَدًا " قَالَتْ: لاَ، قَالَ : "فَأَفْطِرِي" ((رَوَاهُ الْبُخَارِيّ))
Juwairiyah bint Al-Harith (May Allah be pleased with her), the Mother of the Believers, said that the Prophet (ﷺ) visited her on a Friday and she was observing fast. He asked, "Did you observe fast yesterday?" She said, "No." He asked, "Do you intend to observe fast tomorrow?" She said, "No." He said, "In that case, give up your fast today." [Al-Bukhari].
Riyad as-Salihin, 1763