Arabic (Original)
حَدَّثَنَا وَكِيعٌ حَدَّثَنَا سُفْيَانُ وَمِسْعَرٌ عَنْ حَبِيبِ بْنِ أَبِي ثَابِتٍ عَنْ أَبِي الْعَبَّاسِ الْمَكِّيِّ عَنْ عَبْدِ اللَّهِ بْنِ عَمْرٍو قَالَ قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ أَفْضَلُ الصَّوْمِ صَوْمُ أَخِي دَاوُدَ كَانَ يَصُومُ يَوْمًا وَيُفْطِرُ يَوْمًا وَلَا يَفِرُّ إِذَا لَاقَى قَالَ قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ لَا صَامَ مَنْ صَامَ الْأَبَدَ.
English Translation
Waki' narrated to us: Sufyan and Mis'ar narrated from Habib ibn Abi Thabit from Abu al-Abbas al-Makki from Abdullah ibn Amr who said: The Messenger of Allah (peace be upon him) said: "The best fasting is the fast of my brother Dawud (David): he would fast one day and break his fast one day, and he would not flee when he met the enemy." He also said: The Messenger of Allah (peace be upon him) said: "He who fasts perpetually has not truly fasted."