Abu Hurairah (May Allah be pleased with him) reported: The Messenger of Allah (ﷺ) said, "The best month for observing Saum (fasting) next after Ramadan is the month of Allah, the Muharram; and the best Salat (prayer) next after the prescribed Salat is Salat at night (Tahajjud prayers)."[Muslim].

Abu Hurairah (May Allah be pleased with him) reported: The Messenger of Allah (ﷺ) said, "The best month for observing Saum (fasting) next after Ramadan is the month of Allah, the Muharram; and the best Salat (prayer) next after the prescribed Salat is Salat at night (Tahajjud prayers)."[Muslim].

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)‏‏)‏‏.‏