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
tabarani:2964 – [Chain 1] Abū Yazīd al-Qarāṭīsī > ʿAbdullāh b. ʿAbd al-Ḥakam > Mālik [Chain 2] ʿAlī b. ʿAbd al-ʿAzīz > al-Qaʿnabī > Mālik > Hishām b. ʿUrwah from his father > ʿĀʾishah ؓ > Ḥamzah b. ʿAmr al-Aslamī

[Machine] Al-Qa'anabi narrated from Malik from Hisham ibn 'Urwa from his father from Aisha that Hamza ibn Amr al-Aslami said to the Messenger of Allah ﷺ , "Should I fast while traveling?" And he used to fast a lot. So the Messenger of Allah ﷺ said, "If you wish, then fast, and if you wish, then break your fast."  

الطبراني:٢٩٦٤ – حَدَّثَنَا أَبُو يَزِيدَ الْقَرَاطِيسِيُّ ثنا عَبْدُ اللهِ بْنُ عَبْدِ الْحَكَمِ أَنَا مَالِكٌ ح وَحَدَّثَنَا عَلِيُّ بْنُ عَبْدِ الْعَزِيزِ

ثنا الْقَعْنَبِيُّ عَنْ مَالِكٍ عَنْ هِشَامِ بْنِ عُرْوَةَ عَنْ أَبِيهِ عَنْ عَائِشَةَ ؓ أَنَّ حَمْزَةَ بْنَ عَمْرٍو الْأَسْلَمِيَّ قَالَ لِرَسُولِ اللهِ ﷺ أَصُومُ فِي السَّفَرِ؟ وَكَانَ كَثِيرَ الصِّيَامِ فَقَالَ رَسُولُ اللهِ ﷺ «إِنْ شِئْتَ فَصُمْ وَإِنْ شِئْتَ فَأَفْطِرْ»  

See similar narrations below:

Collected by Bukhārī, Muslim, Ṭabarānī, Suyūṭī
bukhari:1943 – ʿAbdullāh b. Yūsuf > Mālik > Hishām b. ʿUrwah from his father > ʿĀʾishah

(the wife of the Prophet) Hamza bin ʿAmr Al-Aslami asked the Prophet, "Should I fast while traveling?" The Prophet ﷺ replied, "You may fast if you wish, and you may not fast if you wish."  

البخاري:١٩٤٣ – حَدَّثَنَا عَبْدُ اللَّهِ بْنُ يُوسُفَ أَخْبَرَنَا مَالِكٌ عَنْ هِشَامِ بْنِ عُرْوَةَ عَنْ أَبِيهِ

عَنْ عَائِشَةَ ؓ زَوْجِ النَّبِيِّ ﷺ أَنَّ حَمْزَةَ بْنَ عَمْرٍو الأَسْلَمِيَّ قَالَ لِلنَّبِيِّ ﷺ أَأَصُومُ فِي السَّفَرِ وَكَانَ كَثِيرَ الصِّيَامِ فَقَالَ إِنْ شِئْتَ فَصُمْ وَإِنْ شِئْتَ فَأَفْطِرْ  

muslim:1121a – Qutaybah b. Saʿīd > Layth > Hishām b. ʿUrwah from his father > ʿĀʾishah

Fast if you like and break it if you like.  

مسلم:١١٢١a – حَدَّثَنَا قُتَيْبَةُ بْنُ سَعِيدٍ حَدَّثَنَا لَيْثٌ عَنْ هِشَامِ بْنِ عُرْوَةَ عَنْ أَبِيهِ عَنْ عَائِشَةَ ؓ

أَنَّهَا قَالَتْ سَأَلَ حَمْزَةُ بْنُ عَمْرٍو الأَسْلَمِيُّ رَسُولَ اللَّهِ ﷺ عَنِ الصِّيَامِ فِي السَّفَرِ فَقَالَ إِنْ شِئْتَ فَصُمْ وَإِنْ شِئْتَ فَأَفْطِرْ  

tabarani:2965 – Yaḥyá b. ʿUthmān b. Ṣāliḥ > ʿAbdullāh b. Ṣāliḥ > al-Layth > Muḥammad b. ʿAjlān > Hishām b. ʿUrwah > ʿĀʾishah

"If you wish then fast and if you wish then do not fast." (Using translation from Nasāʾī 2308)   

الطبراني:٢٩٦٥ – حَدَّثَنَا يَحْيَى بْنُ عُثْمَانَ بْنِ صَالِحٍ ثنا عَبْدُ اللهِ بْنُ صَالِحٍ حَدَّثَنِي اللَّيْثُ عَنْ مُحَمَّدِ بْنِ عَجْلَانَ عَنْ هِشَامِ بْنِ عُرْوَةَ عَنْ عَائِشَةَ

أَنَّ حَمْزَةَ بْنَ عَمْرٍو الْأَسْلَمِيَّ سَأَلَ رَسُولَ اللهِ ﷺ عَنِ الصِّيَامِ فِي السَّفَرِ فَقَالَ «إِنْ شِئْتَ فَصُمْ وَإِنْ شِئْتَ فَأَفْطِرْ»  

tabarani:2969 – Muḥammad b. Muʿādh al-Ḥalabī > al-Qaʿnabī from my father > Hishām b. ʿUrwah from his father > ʿĀʾishah > Ḥamzah b. ʿAmr al-Aslamī

[Machine] Al-Qa'nabi reported that his father reported from Hisham ibn 'Urwah, from his father, from Aisha that Hamzah ibn 'Amr al-Aslami said to the Messenger of Allah ﷺ, "I am a man who fasts, should I fast while travelling?" He said, "If you wish, then fast, and if you wish, then break your fast."  

الطبراني:٢٩٦٩ – حَدَّثَنَا مُحَمَّدُ بْنُ مُعَاذٍ الْحَلَبِيُّ

ثنا الْقَعْنَبِيُّ ثنا أَبِي عَنْ هِشَامِ بْنِ عُرْوَةَ عَنْ أَبِيهِ عَنْ عَائِشَةَ أَنَّ حَمْزَةَ بْنَ عَمْرٍو الْأَسْلَمِيَّ قَالَ لِرَسُولِ اللهِ ﷺ إِنِّي رَجُلٌ أَصُومُ فَأَصُومُ فِي السَّفَرِ؟ فَقَالَ «إِنْ شِئْتَ فَصُمْ وَإِنْ شِئْتَ فَأَفْطِرْ»  

tabarani:2977 – ʿAbd al-Kabīr b. ʿUmar al-Khaṭṭābī > ʿUmar b. Mudrik al-Rāzī > Makkī b. Ibrāhīm > Yaḥyá b. ʿAbdullāh b. Sālim > Hishām b. ʿUrwah from his father > ʿĀʾishah

"If you wish then fast and if you wish then do not fast." (Using translation from Nasāʾī 2308)   

الطبراني:٢٩٧٧ – حَدَّثَنَا عَبْدُ الْكَبِيرِ بْنُ عُمَرَ الْخَطَّابِيُّ ثنا عُمَرُ بْنُ مُدْرِكٍ الرَّازِيُّ ثنا مَكِّيُّ بْنُ إِبْرَاهِيمَ ثنا يَحْيَى بْنُ عَبْدِ اللهِ بْنِ سَالِمٍ عَنْ هِشَامِ بْنِ عُرْوَةَ عَنْ أَبِيهِ عَنْ عَائِشَةَ

أَنَّ حَمْزَةَ بْنَ عَمْرٍو الْأَسْلَمِيَّ سَأَلَ رَسُولَ اللهِ ﷺ عَنِ الصَّوْمِ فِي السَّفَرِ فَقَالَ «إِنْ شِئْتَ فَصُمْ وَإِنْ شِئْتَ فَأَفْطِرْ»  

suyuti:291-1b – Ḥamzah b. ʿAmr al-Aslami > Saʾalt al-Nabi ﷺ > al-Ṣawm Fiá al-Safar > In Shiʾt Faṣum And ʾIn
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السيوطي:٢٩١-١b –

" عَنْ حَمْزَةَ بْنِ عَمْرٍو الأَسْلَمِىِّ قَالَ: سَأَلْتُ النَّبِىَّ ﷺ عَنِ الصَّوْمِ فِى السَّفَرِ، فَقَالَ: إِنْ شِئْتَ فَصُمْ وَإِنْ شِئْتَ فَأَفْطِرْ".  

أبو نعيم