Narrated Abu Aiyub from Juwairiya bint Al-Harith:The Prophet (ﷺ) visited her (Juwairiya) on a Friday and she was fasting. He asked her, "Did you fast yesterday?" She said, "No." He said, "Do you intend to fast tomorrow?" She said, "No." He said, "Then break your fast." Through another series of narrators, Abu Aiyub is reported to have said, "He ordered her and she broke her fast."
حَدَّثَنَا مُسَدَّدٌ، حَدَّثَنَا يَحْيَى، عَنْ شُعْبَةَ، ح. وَحَدَّثَنِي مُحَمَّدٌ، حَدَّثَنَا غُنْدَرٌ، حَدَّثَنَا شُعْبَةُ، عَنْ قَتَادَةَ، عَنْ أَبِي أَيُّوبَ، عَنْ جُوَيْرِيَةَ بِنْتِ الْحَارِثِ ـ رضى الله عنها ـ أَنَّ النَّبِيَّ صلى الله عليه وسلم دَخَلَ عَلَيْهَا يَوْمَ الْجُمُعَةِ وَهْىَ صَائِمَةٌ فَقَالَ " أَصُمْتِ أَمْسِ ". قَالَتْ لاَ. قَالَ " تُرِيدِينَ أَنْ تَصُومِي غَدًا ". قَالَتْ لاَ. قَالَ " فَأَفْطِرِي ".وَقَالَ حَمَّادُ بْنُ الْجَعْدِ سَمِعَ قَتَادَةَ حَدَّثَنِي أَبُو أَيُّوبَ أَنَّ جُوَيْرِيَةَ حَدَّثَتْهُ فَأَمَرَهَا فَأَفْطَرَتْ.
Bukhari
Fasting • Hadith 93