Sahih al-Bukhari 1947

Arabic

حَدَّثَنَا عَبْدُ اللَّهِ بْنُ مَسْلَمَةَ، عَنْ مَالِكٍ، عَنْ حُمَيْدٍ الطَّوِيلِ، عَنْ أَنَسِ بْنِ مَالِكٍ، قَالَ كُنَّا نُسَافِرُ مَعَ النَّبِيِّ صلى الله عليه وسلم فَلَمْ يَعِبِ الصَّائِمُ عَلَى الْمُفْطِرِ، وَلاَ الْمُفْطِرُ عَلَى الصَّائِمِ‏.‏

English translation

Narrated Anas bin Malik:We used to travel with the Prophet (ﷺ) and neither did the fasting persons criticize those who were not fasting, nor did those who were not fasting criticize the fasting ones

Reference: Sahih al-Bukhari 1947, Book of Fasting. English translation by Dr. Muhammad Muhsin Khan.