حَدَّثَنَا قُتَيْبَةُ بْنُ سَعِيدٍ، قَالَ‏:‏ حَدَّثَنَا حَمَّادُ بْنُ زَيْدٍ، عَنْ أَيُّوبَ، عَنْ عَبْدِ اللهِ بْنِ شَقِيقٍ، قَالَ‏:‏ سَأَلْتُ عَائِشَةَ، عَنْ صِيَامِ رَسُولِ اللهِ صلى الله عليه وسلم، قَالَتْ‏:‏ كَانَ يَصُومُ حَتَّى نَقُولَ قَدْ صَامَ، وَيُفْطِرُ حَتَّى نَقُولَ قَدْ أَفْطَرَ قَالَتْ‏:‏ وَمَا صَامَ رَسُولُ اللهِ صلى الله عليه وسلم، شَهْرًا كَامِلا مُنْذُ قَدِمَ الْمَدِينَةَ إِلا رَمَضَانَ‏.‏
Translation
Abdullah ibn Shaqiq said

"I asked 'A'isha (may Allah the Exalted be well pleased with her) about the fasting of Allah’s Messenger (Allah bless him and give him peace). She said: “He used to fast until we would say: ‘He has fasted,’ and he used to break fast until we would say: ‘He has broken fast.’” She also said: “Allah’s Messenger (Allah bless him and give him peace) did not fast for a whole month after arriving in Medina, with the exception of Ramadan.’