(11) باب فِيمَنْ يَصِلُ شَعْبَانَ بِرَمَضَانَ
Narrated Abu Hurairah:
The Messenger of Allah (ﷺ) as saying: Do not fast one day or two days just before Ramadan, except in the case of a man who has been in the habit of observing the particular fast, for he may fast on that day.
Reference: Sunan Abi Dawud 2335
In-book reference: Book 14, Hadith 23
English translation: Book 13, Hadith 2328