Volume 3, Book 31, Number 190:
Narrated ‘Aisha:
Allah’s Apostle used to fast till one would say that he would never stop fasting, and he would
abandon fasting till one would say that he would never fast. I never saw Allah’s Apostle fasting for a
whole month except the month of Ramadan, and did not see him fasting in any month more than in
the month of Sha’ban.
Volume 3 – 447 / 1700
SAHIH BUKHARI VOLUME 3 > BOOK 31: FASTING