Sunan an Nasai 2293
The Book of Fasting
أَخْبَرَنِي هِلاَلُ بْنُ الْعَلاَءِ، قَالَ حَدَّثَنَا حُسَيْنٌ، قَالَ حَدَّثَنَا زُهَيْرٌ، قَالَ حَدَّثَنَا أَبُو إِسْحَاقَ، قَالَ أَخْبَرَنِي مُجَاهِدٌ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم صَامَ فِي شَهْرِ رَمَضَانَ وَأَفْطَرَ فِي السَّفَرِ .
Mujahid narrated:That the Messenger of Allah fasted during Ramadan and broke his fast when traveling
Grading: Abu Ghuddah: Sahih · Al-Albani: Sahih · Zubair Ali Zai: Sahih
Text from the public-domain hadith-api dataset. Numbering follows that dataset and can differ by a few from some printed editions — check the wording, not only the number.