Sahih Muslim Book - 13, Hadith - 2743

وَحَدَّثَنِى زُهَيْرُ بْنُ حَرْبٍ وَمُحَمَّدُ بْنُ حَاتِمٍ جَمِيعًا عَنِ ابْنِ مَهْدِىٍّ - قَالَ زُهَيْرٌ حَدَّثَنَا عَبْدُ الرَّحْمَنِ بْنُ مَهْدِىٍّ - حَدَّثَنَا سَلِيمُ بْنُ حَيَّانَ حَدَّثَنَا سَعِيدُ بْنُ مِينَاءَ قَالَ قَالَ عَبْدُ اللَّهِ بْنُ عَمْرٍو قَالَ لِى رَسُولُ اللَّهِ -صلى الله عليه وسلم- « يَا عَبْدَ اللَّهِ بْنَ عَمْرٍو بَلَغَنِى أَنَّكَ تَصُومُ النَّهَارَ وَتَقُومُ اللَّيْلَ فَلاَ تَفْعَلْ فَإِنَّ لِجَسَدِكَ عَلَيْكَ حَظًّا وَلِعَيْنِكَ عَلَيْكَ حَظًّا وَإِنَّ لِزَوْجِكَ عَلَيْكَ حَظًّا صُمْ وَأَفْطِرْ صُمْ مِنْ كُلِّ شَهْرٍ ثَلاَثَةَ أَيَّامٍ فَذَلِكَ صَوْمُ الدَّهْرِ ». قُلْتُ يَا رَسُولَ اللَّهِ إِنَّ بِى قُوَّةً. قَالَ « فَصُمْ صَوْمَ دَاوُدَ - عَلَيْهِ السَّلاَمُ - صُمْ يَوْمًا وَأَفْطِرْ يَوْمًا ». فَكَانَ يَقُولُ يَا لَيْتَنِى أَخَذْتُ بِالرُّخْصَةِ.

‘Abdullah bin ‘Amr said: “The Messenger of Allah (SAW) said to me: ‘O ‘Abdullah bin ‘Amr, I have heard that you fast all the day and pray all night. Do not do that, for your body is entitled to a share from you, your eye is entitled to a share from you, and your wife is entitled to a share for you. Fast and break the fast, fast three days of every month, for that is like fasting for a lifetime.’ I said: ‘O Messenger of Allah, I have the strength.’ He said: ‘Then observe the fast of Dawud, fast one day and not the next.”’ And he (‘Abdullah bin ‘Amr) used to say: “Would that I had accepted the concession.”