ذِكْرُ خَبَرٍ ثَانٍ يُصَرِّحُ بِصِحَّةِ مَا ذَكَرْنَاهُ
the Messenger of Allah saw some people gathered around a man, so he asked (what was happening) and they said: "It is a man who is exhausted because of fasting." The Messenger of Allah said: "It is not righteousness to fast when traveling." (Using translation from Nasāʾī 2257)
أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ فِي بَعْضِ أَسْفَارِهِ وَرَأَى نَاسًا مُجْتَمِعِينَ عَلَى رَجُلٍ فَسَأَلَ فَقَالُوا رَجُلٌ جَهَدَهُ الصَّوْمُ؛ فَقَالَ رَسُولُ اللَّهِ ﷺ «لَيْسَ مِنَ الْبِرِّ الصِّيَامُ فِي السَّفَرِ»