[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."' '
عَنْ صِيَامِ رَسُولِ اللَّهِ ﷺ فَقَالَتْ كَانَ رَسُولُ اللَّهِ ﷺ يَصُومُ حَتَّى نَقُولَ لاَ يُفْطِرُ وَيُفْطِرُ حَتَّى نَقُولَ لاَ يَصُومُ وَكَانَ يَصُومُ شَعْبَانَ أَوْ عَامَّةَ شَعْبَانَ
"The Messenger of Allah used to fast until we said: 'He will not break his fast.' And he used not to fast until we said: 'He will not fast.' And I never saw the Messenger of Allah fast more in any month than in Shaban."
كَانَ رَسُولُ اللَّهِ ﷺ يَصُومُ حَتَّى نَقُولَ مَا يُفْطِرُ وَيُفْطِرُ حَتَّى نَقُولَ مَا يَصُومُ وَمَا رَأَيْتُ رَسُولَ اللَّهِ ﷺ 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.
أَنَّ رَسُولَ اللَّهِ ﷺ كَانَ يَصُومُ حَتَّى نَقُولَ لاَ يُفْطِرُ وَيُفْطِرُ حَتَّى نَقُولَ لاَ 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