و حَدَّثَنَا مُحَمَّدُ بْنُ بَشَّارٍ وَأَبُو بَکْرِ بْنُ نَافِعٍ عَنْ غُنْدَرٍ عَنْ شُعْبَةَ عَنْ أَبِي بِشْرٍ بِهَذَا الْإِسْنَادِ وَقَالَ شَهْرًا مُتَتَابِعًا مُنْذُ قَدِمَ الْمَدِينَةَ
صحیح مسلم · Hadith 2725
Ibn Abbas (Allah be pleased with both of them) reported: The Messenger of Allah ( صلی اللہ علیہ وسلم ) did not fast throughout any month except during ramadan. And when he observed fast (he fasted so continuously) that one would say that he would not break (them) and when he Abandoned, he abandoned (so continuously) that one would say: By Allah, perhaps he would never fast.
Sanad
و حَدَّثَنَا مُحَمَّدُ بْنُ بَشَّارٍ وَأَبُو بَکْرِ بْنُ نَافِعٍ عَنْ غُنْدَرٍ عَنْ شُعْبَةَ عَنْ أَبِي بِشْرٍ