باب ذِكْرِ الاِخْتِلاَفِ عَلَى أَبِي عُثْمَانَ فِي حَدِيثِ أَبِي هُرَيْرَةَ فِي صِيَامِ ثَلاَثَةِ أَيَّامٍ مِنَ كُلِّ شَهْرٍChapter: Mentioning The Differences Reported From Abu 'Uthman In The Hadith Of Abu Hurairah Regarding Fasting Three Days Out Of Each Month