It wasnarrated from Abu Hurairah that the Messenger of Allah (ﷺ)said:
'When it is the middle of Sha'ban, do not fast until Ramadancomes." (TH)
English reference (TH): Vol. 1, Book 7, Hadith 1651 (TH)
Arabic reference (TH): Book 7, Hadith 1720 (TH)