It was
narrated that Abu Hurairah said:
"(The months in which) We fasted twenty-nine days at the time of the Messenger of Allah ﷺ, were
more than (the months in which) we fasted thirty days.

حَدَّثَنَا مُجَاهِدُ بْنُ مُوسَى، حَدَّثَنَا الْقَاسِمُ بْنُ مَالِكٍ الْمُزَنِيُّ، حَدَّثَنَا الْجُرَيْرِيُّ، عَنْ أَبِي نَضْرَةَ، عَنْ أَبِي هُرَيْرَةَ، قَالَ مَا صُمْنَا عَلَى عَهْدِ رَسُولِ اللَّهِ ﷺ تِسْعًا وَعِشْرِينَ أَكْثَرُ مِمَّا صُمْنَا ثَلاَثِينَ .