وعن أبي هريرة رضي الله عنه قال‏:‏ قال رسول الله صلى الله عليه وسلم‏:‏ ‏"‏أفضل الصيام بعد رمضان‏:‏ شهر الله المحرم، وأفضل الصلاة بعد الفريضة‏:‏ صلاة الليل‏"‏ ‏(‏‏(‏رواه مسلم‏)‏‏)‏‏.‏

'Aishah (May Allah be pleased with her) reported

The Prophet (ﷺ) did not observe voluntary Saum (fasting) so frequently during any other month as he did during Sha'ban. He observed Saum throughout the month of Sha'ban.Another narration is: He (ﷺ) observed Saum during the whole month of Sha'ban except a few days.[Al- Bukhari and Muslim].