It wasnarrated that Rabi'ah bin Ghaz asked 'Aishah about the fastingofthe Messenger of Allah (ﷺ). She said:
"He used to fast all ofSha'ban, until he joined it to Ramadan." (RU)
English reference (RU): Vol. 1, Book 7, Hadith 1649 (RU)
Arabic reference (RU): Book 7, Hadith 1718 (RU)