Hadith 634
سئل النبى صلى الله عليه وسلم أى الصوم أفضل بعد رمضان فقال شعبان
"The Noble Prophet (peace and blessings be upon him) was asked, 'Which fasts are the most virtuous after Ramadan?' He (peace and blessings be upon him) replied, 'Those of the month of Sha'ban.'"