Sahih Muslim 1121a
'A'isha (Allah be pleased with her) reported that Hamza b. 'Amr al-Aslami asked the Messenger of Allah ﷺ about fasting on a journey, and he (the Holy Prophet) said: Fast if you like and break it if you like.
حَدَّثَنَا قُتَيْبَةُ بْنُ سَعِيدٍ، حَدَّثَنَا لَيْثٌ، عَنْ هِشَامِ بْنِ عُرْوَةَ، عَنْ أَبِيهِ، عَنْ عَائِشَةَ، - رضى الله عنها - أَنَّهَا قَالَتْ سَأَلَ حَمْزَةُ بْنُ عَمْرٍو الأَسْلَمِيُّ رَسُولَ اللَّهِ ﷺ عَنِ الصِّيَامِ فِي السَّفَرِ فَقَالَ
" إِنْ شِئْتَ فَصُمْ وَإِنْ شِئْتَ فَأَفْطِرْ " .
Classification
Sahih (Authentic)
References
Sahih Muslim 1121a
Sahih Muslim Vol. 3, Book of Fasting, Hadith 2487