Hadith 1163

نَا أَحْمَدُ بْنُ عَبْدَةَ ، أَخْبَرَنَا حَمَّادٌ يَعْنِي ابْنَ زَيْدٍ ، حَدَّثَنَا أَبُو لُبَابَةَ ، سَمِعَ عَائِشَةَ ، تَقُولُ : كَانَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ " يَصُومُ حَتَّى نَقُولَ مَا يُرِيدُ أَنْ يُفْطِرَ ، وَيُفْطِرُ حَتَّى نَقُولَ مَا يُرِيدُ أَنْ يَصُومَ ، وَكَانَ يَقْرَأُ كُلَّ لَيْلَةٍ بَنِي إِسْرَائِيلَ ، وَالزُّمَرَ "
Lady Aisha (may Allah be pleased with her) narrates that the Messenger of Allah (peace and blessings be upon him) would observe (voluntary) fasts continuously to the extent that we would say that he does not want to leave fasting, and he would leave (voluntary) fasting continuously to the extent that we would say that he does not want to fast. And he (peace and blessings be upon him) used to recite Surah Bani Isra'il and Surah Az-Zumar every night.
Hadith Reference صحيح ابن خزيمه / جماع أبواب صلاة التطوع بالليل / 1163
Hadith Takhrij اسناده صحيح