 حَدَّثَنِی مُحَمَّدُ بْنُ مُوسَی بْنِ الْمُتَوَکِّلِ قَالَ حَدَّثَنَا عَبْدُ اللَّهِ بْنُ جَعْفَرٍ الْحِمْیَرِیُّ قَالَ حَدَّثَنَا أَحْمَدُ بْنُ مُحَمَّدِ بْنِ عِیسَی عَنِ الْحَسَنِ بْنِ مَحْبُوبٍ عَنْ جَمِیلِ بْنِ صَالِحٍ عَنْ مُحَمَّدِ بْنِ مَرْوَانَ قَالَ سَمِعْتُ أَبَا عَبْدِ اللَّهِ ع یَقُولُ کَانَ رَسُولُ اللَّهِ ص یَصُومُ حَتَّی یُقَالَ لَا یُفْطِرُ ثُمَّ صَامَ یَوْماً وَ أَفْطَرَ یَوْماً ثُمَّ صَامَ الْإِثْنَیْنِ وَ الْخَمِیسَ ثُمَّ آلَ مِنْ ذَلِکَ إِلَی صِیَامِ ثَلَاثَهِ أَیَّامٍ فِی الشَّهْرِ- خَمِیسٍ فِی أَوَّلِ الشَّهْرِ وَ أَرْبِعَاءَ فِی وَسَطِ الشَّهْرِ وَ خَمِیسٍ فِی آخِرِ الشَّهْرِ وَ کَانَ یَقُولُ ذَاکَ صَوْمُ الدَّهْرِ وَ قَدْ کَانَ أَبِی ع یَقُولُ مَا مِنْ أَحَدٍ أَبْغَضَ إِلَیَّ مِنْ رَجُلٍ یُقَالُ لَهُ کَانَ رَسُولُ اللَّهِ ص یَفْعَلُ کَذَا وَ کَذَا فَیَقُولُ لَا یُعَذِّبُنِی اللَّهُ عَلَی أَنْ أَجْتَهِدَ فِی الصَّلَاهِ کَأَنَّهُ یَرَی أَنَّ رَسُولَ اللَّهِ ص تَرَکَ شَیْئاً مِنَ الْفَضْلِ عَجْزاً عَنْهُ.
1.  It is narrated from Imam Ja’far Sadiq  that when the Holy Prophet (s.a.w.s.) used to fast, he used to do it so much that people used to say that he doesn’t miss fasts any time. And when he didn’t fast for a few days, the people used to say  that  he  is  not  fasting.  He  brought  a  change  in  his schedule after some time. Now he used to fast on alternate days.  Then  he  started  fasting  every  Sunday  and  Thursday only.  Again  he  changed  his  ways  and  started  fasting  first Thursday, mid Wednesday  and last Thursday  of a  month. He  used to say that the reward of observing these fasts is equal  to  fasting  for  an  age.  Imam    narrates  that  his father used to say, “I won’t get more angry with a person other than one who points out the way in which the Holy Prophet (s.a.w.s.) used to perform his deeds being confident that Allah won’t punish him for the sake of his Salaat. That person is like one who is trying to say that the Holy Prophet (s.a.w.s.)  used  to  miss  out  excellent  deeds  due  to  some weakness.”