The Book of Fasting
22/58. Chapter:
Mentioning the Differences in the Report from Hisham 'Urwah about it
Sunan an-Nasai
أَخْبَرَنَا مُحَمَّدُ بْنُ سَلَمَةَ، قَالَ أَنْبَأَنَا ابْنُ الْقَاسِمِ، قَالَ حَدَّثَنِي مَالِكٌ، عَنْ هِشَامِ بْنِ عُرْوَةَ، عَنْ أَبِيهِ، عَنْ عَائِشَةَ، قَالَتْ إِنَّ حَمْزَةَ قَالَ لِرَسُولِ اللَّهِ صلى الله عليه وسلم يَا رَسُولَ اللَّهِ أَصُومُ فِي السَّفَرِ وَكَانَ كَثِيرَ الصِّيَامِ . فَقَالَ لَهُ رَسُولُ اللَّهِ صلى الله عليه وسلم " إِنْ شِئْتَ فَصُمْ وَإِنْ شِئْتَ فَأَفْطِرْ " .
It was narrated that 'Aishah said: "Hamzah said to the Messenger of Allah: 'O Messenger of Allah, should I fast while traveling?' He used to fast a great deal. The Messenger of Allah said to him: "If you wish then fast and if you wish then do not fast."'
Reference : Sunan an-Nasa'i 2306In-book reference : Book 22, Hadith 217English translation : Vol. 3, Book 22, Hadith 2308