" صُمْ مِنْ كُلِّ عَشْرَةِ أَيَّامٍ يَوْمًا وَلَكَ أَجْرُ تِلْكَ التِّسْعَةِ " . فَقُلْتُ إِنِّي أَقْوَى مِنْ ذَلِكَ . قَالَ " صُمْ مِنْ كُلِّ تِسْعَةِ أَيَّامٍ يَوْمًا وَلَكَ أَجْرُ تِلْكَ الثَّمَانِيَةِ " . قُلْتُ إِنِّي أَقْوَى مِنْ ذَلِكَ . قَالَ " فَصُمْ مِنْ كُلِّ ثَمَانِيَةِ أَيَّامٍ يَوْمًا وَلَكَ أَجْرُ تِلْكَ السَّبْعَةِ " . قُلْتُ إِنِّي أَقْوَى مِنْ ذَلِكَ قَالَ فَلَمْ يَزَلْ حَتَّى قَالَ " صُمْ يَوْمًا وَأَفْطِرْ يَوْمًا "
It was narrated that 'Abdullah bin 'Amr said: 'Amr said: "I spoke to the Prophet and he said: 'Fast one day out of ten and you will have the reward of the other nine.' I said: 'I am able to do more than that.' He said: 'Fast one day out of eight and you will have the reward of the other eight.' I said: 'I am able to do more than that.' He said: 'Fast one day out of eight and you will have the reward of the other seven.' I said: 'I am able to do more than that.' 'Fast one day and not the next."'