"I would not make up what was due upon me from Ramadan except in Sha'ban, until the Messenger of Allah died."  

مَا كُنْتُ أَقْضِي مَا يَكُونُ عَلَىَّ مِنْ رَمَضَانَ إِلاَّ فِي شَعْبَانَ حَتَّى تُوُفِّيَ رَسُولُ اللَّهِ ﷺ