I asked Sa'id b. Jubair about fasting during Rajab. He said: Ibn 'Abbas told me that the Messenger of Allah ﷺ used to fast to such an extent that we thought that he would never break his fast; and he would go without fasting to such an extent that we thought he would never fast.  

أَنَّ رَسُولَ اللَّهِ ﷺ كَانَ يَصُومُ حَتَّى نَقُولَ لاَ يُفْطِرُ وَيُفْطِرُ حَتَّى نَقُولَ لاَ يَصُومُ  

Yahya related to me from Malik from Abu'n Nadr, the mawla of Umar ibn Ubaydullah, from Abu Salama ibn Abd ar-Rahman that A'isha, the wife of the Prophet ﷺ said, "The Messenger of Allah ﷺ used to fast for so long that we thought he would never stop fasting, and he would go without fasting for so long that we thought he would never fast again. I never saw the Messenger of Allah ﷺ fast for a complete month except for Ramadan, and I never saw him do more fasting in any one month than he did in Shaban.'  

عَنْ عَائِشَةَ زَوْجِ النَّبِيِّ ﷺ أَنَّهَا قَالَتْ كَانَ رَسُولُ اللَّهِ ﷺ يَصُومُ حَتَّى نَقُولَ لاَ يُفْطِرُ وَيُفْطِرُ حَتَّى نَقُولَ لاَ يَصُومُ وَمَا رَأَيْتُ رَسُولَ اللَّهِ ﷺ اسْتَكْمَلَ صِيَامَ شَهْرٍ قَطُّ إِلاَّ رَمَضَانَ وَمَا رَأَيْتُهُ فِي شَهْرٍ أَكْثَرَ صِيَامًا مِنْهُ فِي شَعْبَانَ  

I asked Sa'id b. Jubair about fasting during Rajab. He said: Ibn 'Abbas told me that the Messenger of Allah ﷺ used to fast to such an extent that we thought that he would never break his fast; and he would go without fasting to such an extent that we thought he would never fast. (Using translation from Abū Dāʾūd 2430)   

عَنْ صَوْمِ رَسُولِ اللهِ ﷺ تَطَوُّعًا قَالَ كَانَ يَصُومُ حَتَّى نَقُولَ لَا يُفْطِرُ وَيُفْطِرُ حَتَّى نَقُولَ لَا يَصُومُ  

I asked Sa'id b. Jubair about fasting during Rajab. He said: Ibn 'Abbas told me that the Messenger of Allah ﷺ used to fast to such an extent that we thought that he would never break his fast; and he would go without fasting to such an extent that we thought he would never fast. (Using translation from Abū Dāʾūd 2430)  

أَنَّ رَسُولَ اللهِ ﷺ كَانَ يَصُومُ حَتَّى نَقُولَ لَا يُفْطِرُ وَيُفْطِرُ حَتَّى نَقُولَ لَا يَصُومُ  

[Machine] About fasting in the month of Rajab, how do you see it? He said, Ibn Abbas narrated to me that the Messenger of Allah ﷺ used to fast until we would say, "He does not break his fast," and he would break his fast until we would say, "He does not fast."  

عَنْ صَوْمِ رَجَبٍ كَيْفَ تَرَى فِيهِ ؟ قَالَ حَدَّثَنِي ابْنُ عَبَّاسٍ أَنَّ رَسُولَ اللهِ ﷺ كَانَ يَصُومُ حَتَّى نَقُولَ لَا يُفْطِرُ وَيُفْطِرُ حَتَّى نَقُولَ لَا يَصُومُ  

[Machine] The Prophet ﷺ used to fast until it was said he would not break his fast, and he would break his fast until it was said he would not fast. And he used to observe the most fasting in the month of Sha'ban.  

كَانَ النَّبِيُّ ﷺ يَصُومُ حَتَّى يُقَالَ لَا يُفْطِرُ وَيُفْطِرُ حَتَّى يُقَالَ لَا يَصُومُ وَكَانَ أَكْثَرُ صَوْمِهِ فِي شَعْبَانَ  

"The Messenger of Allah used to fast until we said: 'He will not fast.' And he used to fast Shaban, or most of Shaban."' ' (Using translation from Nasāʾī 2177)  

عَنْ صِيَامِ رَسُولِ اللهِ ﷺ فَقَالَتْ كَانَ رَسُولُ اللهِ ﷺ «يَصُومُ حَتَّى نَقُولَ لَا يُفْطِرُ وَيُفْطِرُ حَتَّى نَقُولَ لَا يَصُومُ وَكَانَ يَصُومُ شَعْبَانَ أَوْ عَامَّةَ شَعْبَانَ»  

"I asked Aishah: 'Tell me about the fasting of the Messenger of Allah.' She said: 'he used to fast until we said: he is going to fast until we said: He is not going to fast. He never fasted any month more than Shaban. He used to fast (all) of Shaban except a little, he used to fast all of Shaban."' ' (Using translation from Nasāʾī 2179)   

كَانَ رَسُولُ اللهِ ﷺ يَصُومُ حَتَّى نَقُولَ لَا يُفْطِرُ وَيُفْطِرُ حَتَّى نَقُولَ لَا يَصُومُ وَلَمْ أَرَهُ فِي شَهْرٍ أَكْثَرَ مِنْهُ صِيَامًا فِي شَعْبَانَ كَانَ يَصُومُ شَعْبَانَ إِلَّا قَلِيلًا بَلْ كَانَ يَصُومُ شَعْبَانَ كُلَّهُ