Jami` at-Tirmidhi 712
جامع الترمذي#712Sahihحَدَّثَنَا نَصْرُ بْنُ عَلِيٍّ الْجَهْضَمِيُّ، حَدَّثَنَا بِشْرُ بْنُ الْمُفَضَّلِ، عَنْ سَعِيدِ بْنِ يَزِيدَ أَبِي مَسْلَمَةَ، عَنْ أَبِي نَضْرَةَ، عَنْ أَبِي سَعِيدٍ الْخُدْرِيِّ، قَالَ كُنَّا نُسَافِرُ مَعَ رَسُولِ اللَّهِ صلى الله عليه وسلم فِي رَمَضَانَ فَمَا يَعِيبُ عَلَى الصَّائِمِ صَوْمَهُ وَلاَ عَلَى الْمُفْطِرِ إِفْطَارَهُ . قَالَ أَبُو عِيسَى هَذَا حَدِيثٌ حَسَنٌ صَحِيحٌ .
Abu Sa'eed (Al-Khudri) narrated:"We were on a journey with the Messenger of Allah during the month of Ramadan. No one objected to the fast of the one fasting nor the fast breaking of the one who broke his fast
Scholarly Authentication
The label above is the grade most of these scholars gave — one dissenting opinion no longer speaks for all of them. If any scholar calls a narration fabricated, that verdict is shown instead, whatever the others say. Each scholar's own wording:
In-book reference: 8:31