حَدَّثَنَا أَحْمَدُ بْنُ يُونُسَ، حَدَّثَنَا زَائِدَةُ، عَنْ حُمَيْدٍ الطَّوِيلِ، عَنْ أَنَسٍ، قَالَ سَافَرْنَا مَعَ رَسُولِ اللَّهِ صلى الله عليه وسلم فِي رَمَضَانَ فَصَامَ بَعْضُنَا وَأَفْطَرَ بَعْضُنَا فَلَمْ يَعِبِ الصَّائِمُ عَلَى الْمُفْطِرِ وَلاَ الْمُفْطِرُ عَلَى الصَّائِمِ ‏.‏

Narrated Anas : We travelled along with the Prophet (PBUH) during Ramadan. Some of us were fasting and other broke their fast. Those who fasted did not find fault with those who broke, and those who broke their fast did not find fault with those who fasted. Translation Not Available

Book Ref: Sunan Abi Dawud Book 14 Hadith 2405
Web Ref:  Sunan Abi Dawud Book 13 Hadith 2399