Usamah bin Zaid (RA) said: “I said: ‘O Messenger of Allah (ﷺ), I do not see you fasting any month as much as Shaban.’ He (ﷺ) said: ‘That is a month to which people do not pay much attention, between Rajab and Ramadan. It is a month in which the deeds are taken up to the Lord of the worlds, and I like that my deeds be taken up when I am fasting.”‘
(Sunan an-Nasa’i, Book 22, Hadith 268)