Sahih Muslim , Book 13, Hadith 123 (In-Book) ⓘ

Abu Sa'id al-Khudri (Allah be pleased with him) reported: We went out on an expedition with the Messenger of Allah during Ramadan and neither the observer of the fast was found fault with for his fasting, nor the breaker of the fast for breaking it.

حَدَّثَنَا نَصْرُ بْنُ عَلِيٍّ الْجَهْضَمِيُّ، حَدَّثَنَا بِشْرٌ، - يَعْنِي ابْنَ مُفَضَّلٍ - عَنْ أَبِي مَسْلَمَةَ، عَنْ أَبِي نَضْرَةَ، عَنْ أَبِي سَعِيدٍ، - رضى الله عنه - قَالَ كُنَّا نُسَافِرُ مَعَ رَسُولِ اللَّهِ صلى الله عليه وسلم فِي رَمَضَانَ فَمَا يُعَابُ عَلَى الصَّائِمِ صَوْمُهُ وَلاَ عَلَى الْمُفْطِرِ إِفْطَارُهُ ‏.‏