Sunan an-Nasa'i, Volume 3, Book 22, Hadith 2281 (DarusSalam) ⓘ

It was narrated from Hani bin Ash-Shikhkhir, from a man from Balharish, that his father said: "I was traveling and I came to the Prophet when I was fasting, and he was eating. He said:'Come (and eat).' I said: 'I am fasting.' He said: 'Come here; do you not know what Allah has waived for the traveler?' I said: 'What has Allah waived for the traveler?' He said: 'Fasting and half of the prayer."

أَخْبَرَنَا قُتَيْبَةُ، قَالَ حَدَّثَنَا أَبُو عَوَانَةَ، عَنْ أَبِي بِشْرٍ، عَنْ هَانِئِ بْنِ الشِّخِّيرِ، عَنْ رَجُلٍ، مِنْ بَلْحَرِيشٍ عَنْ أَبِيهِ، قَالَ كُنْتُ مُسَافِرًا فَأَتَيْتُ النَّبِيَّ صلى الله عليه وسلم وَأَنَا صَائِمٌ وَهُوَ يَأْكُلُ قَالَ ‏"‏ هَلُمَّ ‏"‏ ‏.‏ قُلْتُ إِنِّي صَائِمٌ ‏.‏ قَالَ ‏"‏ تَعَالَ أَلَمْ تَعْلَمْ مَا وَضَعَ اللَّهُ عَنِ الْمُسَافِرِ ‏"‏ ‏.‏ قُلْتُ وَمَا وَضَعَ عَنِ الْمُسَافِرِ قَالَ ‏"‏ الصَّوْمَ وَنِصْفَ الصَّلاَةِ ‏"‏ ‏.‏