Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
Qurʾān Bukhārī Muslim Nasāʾī Abū Dāwūd Tirmidhī Ibn Mājah Mālik Aḥmad Dārimī Ḥākim Ibn Ḥibbān Ṭabarānī Nasāʾī's Kubrá Bayhaqī al-Luʾluʾ wa-al-Marjān Ibn Rajab's Fifty Riyāḍ al-Ṣāliḥīn Aḥmad's Zuhd Suyūṭī
ahmad:6914 – Muḥammad b. Jaʿfar > Shuʿbah > Saʿd b. Ibrāhīm > Hilāl b. Ṭalḥah or Ṭalḥah b. Hilāl > ʿAbdullāh b. ʿAmr

[Machine] "To me, the Messenger of Allah ﷺ said, 'O Abdullah ibn Amr, fast for three days every month.' He recited this verse: 'Whoever brings a good deed will have ten times the like thereof' (Quran 6:160). I said, 'Can I do more than that?' He said, 'Fast as Dawud (David) used to: he used to fast one day and break his fast on the next day.'"  

أحمد:٦٩١٤ – حَدَّثَنَا مُحَمَّدُ بْنُ جَعْفَرٍ حَدَّثَنَا شُعْبَةُ عَنْ سَعْدِ بْنِ إِبْرَاهِيمَ عَنْ هِلَالِ بْنِ طَلْحَةَ أَوْ طَلْحَةَ بْنِ هِلَالٍ قَالَ سَمِعْتُ عَبْدَ اللهِ بْنَ عَمْرٍو يَقُولُ قَالَ

لِي رَسُولُ اللهِ ﷺ يَا عَبْدَ اللهِ بْنَ عَمْرٍو صُمِ الدَّهْرَ ثَلَاثَةَ أَيَّامٍ مِنْ كُلِّ شَهْرٍ قَالَ وَقَرَأَ هَذِهِ الْآيَةَ {مَنْ جَاءَ بِالْحَسَنَةِ فَلَهُ عَشْرُ أَمْثَالِهَا} [الأنعام 160] قَالَ قُلْتُ إِنِّي أُطِيقُ أَكْثَرَ مِنْ ذَلِكَ؟ قَالَ صُمْ صِيَامَ دَاوُدَ كَانَ يَصُومُ يَوْمًا وَيُفْطِرُ يَوْمًا  

See similar narrations below:

Collected by Muslim, Nasāʾī, Nasāʾī's Kubrá
muslim:1159h – ʿUbaydullāh b. Muʿādh from my father > Shuʿbah > Ḥabīb > Abū al-ʿAbbās > ʿAbdullāh b. ʿAmr

The Messenger of Allah ﷺ said to me: 'Abdullah b. Amr, you fast continuously and stand in prayer for the whole of night. If you do like that, your eyes would be highly strained and would sink and lose sight. There is no (reward for) fasting (for him) who fasts perpetually. Fasting for three days during the month is like fasting, the whole of the month. I said: I am capable of doing more than this, whereupon he said: Observe the fast of David. He used to fast one day and break (the other) day. And he did not turn back in the encounter.  

مسلم:١١٥٩h – وَحَدَّثَنَا عُبَيْدُ اللَّهِ بْنُ مُعَاذٍ حَدَّثَنِي أَبِي حَدَّثَنَا شُعْبَةُ عَنْ حَبِيبٍ سَمِعَ أَبَا الْعَبَّاسِ سَمِعَ عَبْدَ اللَّهِ بْنَ عَمْرٍو ؓ قَالَ قَالَ

لِي رَسُولُ اللَّهِ ﷺ يَا عَبْدَ اللَّهِ بْنَ عَمْرٍو إِنَّكَ لَتَصُومُ الدَّهْرَ وَتَقُومُ اللَّيْلَ وَإِنَّكَ إِذَا فَعَلْتَ ذَلِكَ هَجَمَتْ لَهُ الْعَيْنُ وَنَهِكَتْ لاَ صَامَ مَنْ صَامَ الأَبَدَ صَوْمُ ثَلاَثَةِ أَيَّامٍ مِنَ الشَّهْرِ صَوْمُ الشَّهْرِ كُلِّهِ قُلْتُ فَإِنِّي أُطِيقُ أَكْثَرَ مِنْ ذَلِكَ قَالَ فَصُمْ صَوْمَ دَاوُدَ كَانَ يَصُومُ يَوْمًا وَيُفْطِرُ يَوْمًا وَلاَ يَفِرُّ إِذَا لاَقَى  

nasai:2399 – Muḥammad b. ʿAbd al-Aʿlá > Khālid > Shuʿbah > Ḥabīb b. Abū Thābit > Abū al-ʿAbbās > al-Shāʿir > ʿAbdullāh b. ʿAmr

"The Messenger of Allah said to me: 'O 'Abdullah bin 'Amr, you fast all the time and you do stand (in prayer) at night, but if you do that your eyes will become sunken and you will become exhausted. There is no fast for one who fasts every day of his life. Fasting a lifetime means fasting three days each month,  

النسائي:٢٣٩٩ – أَخْبَرَنَا مُحَمَّدُ بْنُ عَبْدِ الأَعْلَى قَالَ حَدَّثَنَا خَالِدٌ حَدَّثَنَا شُعْبَةُ قَالَ أَخْبَرَنِي حَبِيبُ بْنُ أَبِي ثَابِتٍ قَالَ سَمِعْتُ أَبَا الْعَبَّاسِ هُوَ الشَّاعِرُ يُحَدِّثُ عَنْ عَبْدِ اللَّهِ بْنِ عَمْرٍو قَالَ قَالَ

لِي رَسُولُ اللَّهِ ﷺ يَا عَبْدَ اللَّهِ بْنَ عَمْرٍو إِنَّكَ تَصُومُ الدَّهْرَ وَتَقُومُ اللَّيْلَ وَإِنَّكَ إِذَا فَعَلْتَ ذَلِكَ هَجَمَتِ الْعَيْنُ وَنَفِهَتْ لَهُ النَّفْسُ لاَ صَامَ مَنْ صَامَ الأَبَدَ صَوْمُ الدَّهْرِ ثَلاَثَةُ أَيَّامٍ مِنَ الشَّهْرِ صَوْمُ الدَّهْرِ كُلِّهِ قُلْتُ إِنِّي أُطِيقُ أَكْثَرَ مِنْ ذَلِكَ قَالَ صُمْ صَوْمَ دَاوُدَ كَانَ يَصُومُ يَوْمًا وَيُفْطِرُ يَوْمًا وَلاَ يَفِرُّ إِذَا لاَقَى  

nasai-kubra:2720 – Muḥammad b. ʿAbd al-Aʿlá > Khālid > Shuʿbah > Ḥabīb b. Abū Thābit > Abū al-ʿAbbās > ʿAbdullāh b. ʿAmr

"The Messenger of Allah said to me: 'O 'Abdullah bin 'Amr, you fast all the time and you do stand (in prayer) at night, but if you do that your eyes will become sunken and you will become exhausted. There is no fast for one who fasts every day of his life. Fasting a lifetime means fasting three days each month, (Using translation from Nasāʾī 2399)  

الكبرى للنسائي:٢٧٢٠ – أَخْبَرَنَا مُحَمَّدُ بْنُ عَبْدِ الْأَعْلَى قَالَ حَدَّثَنَا خَالِدٌ عَنْ شُعْبَةَ قَالَ أَخْبَرَنِي حَبِيبُ بْنُ أَبِي ثَابِتٍ قَالَ سَمِعْتُ أَبَا الْعَبَّاسِ يُحَدِّثُ عَنْ عَبْدِ اللهِ بْنِ عَمْرٍو قَالَ

قَالَ لِي رَسُولُ اللهِ ﷺ «يَا عَبْدَ اللهِ بْنَ عَمْرٍو إِنَّكَ تَصُومُ الدَّهْرَ وَتَقُومُ اللَّيْلَ وَإِنَّكَ إِذَا فَعَلْتَ ذَلِكَ هَجَمَتِ الْعَيْنُ وَنفهت لَهُ النَّفْسُ لَا صَامَ مَنْ صَامَ الْأَبَدَ صَوْمُ الدَّهْرِ ثَلَاثَةُ أَيَّامٍ مِنَ الشَّهْرِ صَوْمُ الدَّهْرِ كُلِّهِ» قُلْتُ إِنِّي أُطِيقُ أَكْثَرَ مِنْ ذَلِكَ قَالَ «صَوْمُ دَاوُدَ كَانَ يَصُومُ يَوْمًا وَيُفْطِرُ يَوْمًا وَلَا يَفِرُّ إِذَا لَاقَى»