Hadith 2396
Narrated Abu Hurairah: The Prophet ﷺ said: If anyone breaks his fast one day in Ramadan without a concession granted to him by Allah, a perpetual fast will not atone for it.
Hadith 2397
The tradition mentioned above has also been transmitted by Abu Hurairah through a different chain of narrators similar to the tradition narrated by Ibn Kathir and Sulaiman. Abu Dawud said: Sufyan and Shubah differed among themselves on the name of the narrator Ibn al-Mutawwas and Abu al-Mutawwas.