يَصُومُ حَتَّى نَقُولَ مَا يُفْطِرُ وَيُفْطِرُ حَتَّى نَقُولَ مَا يَصُومُ وَمَا رَأَيْتُ رَسُولَ اللَّهِ صلى الله عليه وسلم فِي شَهْرٍ أَكْثَرَ صِيَامًا مِنْهُ فِي شَعْبَانَ .
It was narrated that 'Aishah said: "The Messenger of Allah used to fast until we said: 'He will not break his fast.' And he used not to fast until we said: 'He will not fast.' And I never saw the Messenger of Allah fast more in any month than in Shaban."