Sahih Muslim 1121
Sahih Muslim · Book 13: The Book of Fasting · The choice between fasting and not fasting when travelling
Hamza b. 'Amr al-Aslami (Allah be pleased with him) said:
وَحَدَّثَنِي أَبُو الطَّاهِرِ ، وَهَارُونُ بْنُ سَعِيدٍ الأَيْلِيُّ ، - قَالَ هَارُونُ حَدَّثَنَا وَقَالَ أَبُو الطَّاهِرِ أَخْبَرَنَا ابْنُ وَهْبٍ ، أَخْبَرَنِي عَمْرُو بْنُ الْحَارِثِ ، عَنْ أَبِي الأَسْوَدِ ، عَنْ عُرْوَةَ بْنِ الزُّبَيْرِ ، عَنْ أَبِي مُرَاوِحٍ ، عَنْ حَمْزَةَ بْنِ عَمْرٍو الأَسْلَمِيِّ ، - رضى الله عنه - أَنَّهُ قَالَ يَا رَسُولَ اللَّهِ أَجِدُ بِي قُوَّةً عَلَى الصِّيَامِ فِي السَّفَرِ فَهَلْ عَلَىَّ جُنَاحٌ فَقَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " هِيَ رُخْصَةٌ مِنَ اللَّهِ فَمَنْ أَخَذَ بِهَا فَحَسَنٌ وَمَنْ أَحَبَّ أَنْ يَصُومَ فَلاَ جُنَاحَ عَلَيْهِ " . قَالَ هَارُونُ فِي حَدِيثِهِ " هِيَ رُخْصَةٌ " . وَلَمْ يَذْكُرْ مِنَ اللَّهِ .
Messenger of Allah, I find strength in me for fasting on a journey; is there any sin upon me (in doing it)? Thereupon the Messenger of Allah (ﷺ) said: It is a concession from Allah. He who took advantage of it, it is good for him, and he who preferred to observe fast, there is no sin upon him. Harun (one of the narrators) in his narration said: 'lt is a concession, and he made no mention of" from Allah".