What was narrated concerning the fasting of the Prophet (saws) Sunan Ibn Majah 1711

Arabic hadith text
حَدَّثَنَا مُحَمَّدُ بْنُ بَشَّارٍ، حَدَّثَنَا مُحَمَّدُ بْنُ جَعْفَرٍ، حَدَّثَنَا شُعْبَةُ، عَنْ أَبِي بِشْرٍ، عَنْ سَعِيدِ بْنِ جُبَيْرٍ، عَنِ ابْنِ عَبَّاسٍ، قَالَ: كَانَ رَسُولُ اللَّهِ ـ صلى الله عليه وسلمـ يَصُومُ حَتَّى نَقُولَ: لاَ يُفْطِرُ. وَيُفْطِرُ حَتَّى نَقُولَ: لاَ يَصُومُ ‏.‏ وَمَا صَامَ شَهْرًا مُتَتَابِعًا إِلاَّ رَمَضَانَ، مُنْذُ قَدِمَ الْمَدِينَةَ ‏.‏
Translation
It wasnarrated that Ibn ‘Abbas said

“The Messenger of Allah (ﷺ)usedto fast until we thought he would never stop fasting. And he usedtonot fast until we thought we would never fast. And he never fastedany complete month apart from Ramadan, from the time he came toAl-Madinah.”