Arabic (Original)
حَدَّثَنَا مُحَمَّدُ بْنُ عُبَيْدٍ حَدَّثَنَا عُثْمَانُ بْنُ حَكِيمٍ قَالَ سَأَلْتُ سَعِيدَ بْنَ جُبَيْرٍ عَنْ صَوْمِ رَجَبٍ كَيْفَ تَرَى فِيهِ قَالَ حَدَّثَنِي ابْنُ عَبَّاسٍ أَنَّ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ كَانَ يَصُومُ حَتَّى نَقُولَ لَا يُفْطِرُ وَيُفْطِرُ حَتَّى نَقُولَ لَا يَصُومُ.
English Translation
I asked Sa'id ibn Jubayr about fasting in Rajab. He said: 'Ibn Abbas told me that the Messenger of Allah (peace be upon him) 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.'