It was narrated from Ibn 'Abbas that:

the Messenger of Allah fasted while traveling until he reached Qudaid, then he called for a cup of milk and drank and broke his fast; he and his Companions.

أَخْبَرَنَا زَكَرِيَّا بْنُ يَحْيَى، قَالَ أَنْبَأَنَا الْحَسَنُ بْنُ عِيسَى، قَالَ أَنْبَأَنَا ابْنُ الْمُبَارَكِ، قَالَ أَنْبَأَنَا شُعْبَةُ، عَنِ الْحَكَمِ، عَنْ مِقْسَمٍ، عَنِ ابْنِ عَبَّاسٍ، أَنَّ رَسُولَ اللَّهِ ﷺ صَامَ فِي السَّفَرِ حَتَّى أَتَى قُدَيْدًا ثُمَّ دَعَا بِقَدَحٍ مِنْ لَبَنٍ فَشَرِبَ فَأَفْطَرَ هُوَ وَأَصْحَابُهُ .