The prophet Muhammadصلى الله عليه وسلم [peace be upon him] was fasting the most of Sha’aban as Aisha رضي الله عنها narrated:”Allah’s messenger صلى الله عليه وسلم used to observe Saum[fast] till one would say that he would never stop observing Saum[fast] ,and he would abandon observing Saum[fast]till one would say that he would never observe Saum[fast].I never saw Allah’s messenger صلى الله عليه وسلم observing Saum[fast] for a whole month except the month of Ramadan, and did not see him observing Saum[fast] in any month more than in the month of Sha’aban” Bukhari 3:190.
We can extrapolate tow benefits of fasting in Sha’aban:
1- It is Sunnah of the prophet صلى الله عليه وسلم .
2- The one who fasts some of Sha’aban will gain more and more rewards and benefits from the lord{Allah}.
3-It helps Muslims to fast Ramadan without any problems .