(47) باب مَنْ يَقُولُ صُمْتُ رَمَضَانَ كُلَّهُ
Narrated AbuBakrah:
The Prophet (ﷺ) said: One of you should not say: I fasted the whole of Ramadan, and I prayed during the night in the whole of Ramadan. I do not know whether he disliked the purification; or he (the narrator) said: He must have slept a little and taken rest.
Reference: Sunan Abi Dawud 2415
In-book reference: Book 14, Hadith 103
English translation: Book 13, Hadith 2409