The Prophet ﷺ forbade continuous fasting without breaking it, and this sister of mine practices continuous fasting, and I am forbidding her from doing so.
حدثنا وكيع قال ثنا حماد بن سلمة عن بشر بن حرب
نهى النبي ﷺ عن الوصال في الصيام وهذه أختي تواصل وأنا أنهاها
No references are available.
Its isnad is sahih, on account of Bishr bin Harb Abu Amr Nadabi, and the hadith was mentioned previously at 10996 as a marfu narration.