"During the year of the conquest, when the Prophet ﷺ reached Marr Zahran, he told us that we would meet the enemy. So he ordered us to break the fast, and we [all] broke our fast."
لَمَّا بَلَغَ النَّبِيُّ ﷺ عَامَ الْفَتْحِ مَرَّ الظَّهْرَانِ فَآذَنَنَا بِلِقَاءِ الْعَدُوِّ فَأَمَرَنَا بِالْفِطْرِ فَأَفْطَرْنَا أَجْمَعُونَ
"During the year of the conquest, when the Prophet ﷺ reached Marr Zahran, he told us that we would meet the enemy. So he ordered us to break the fast, and we [all] broke our fast." (Using translation from Tirmidhī 1684)
لَمَّا بَلَغَ رَسُولُ اللهِ ﷺ عَامَ الْفَتْحِ مَرَّ الظَّهْرَانِ آذَنَنَا بِلِقَاءِ الْعَدُوِّ فَأَمَرَنَا بِالْفِطْرِ فَأَفْطَرْنَا أَجْمَعُونَ