وَعَنْ بَعْضِ أَصْحَابِ
النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ قَالَ: لَقَدْ رَأَيْتُ النَّبِيَّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ بِالْعَرْجِ يَصُبُّ عَلَى رَأْسِهِ الْمَاءَ وَهُوَ صَائِمٌ مِنَ الْعَطَشِ أَوْ مِنَ الْحَرِّ
One of the Prophet’s companions said he had seen the Prophet (sallallahu alayhi wa sallam) in al-‘Arj* pouring water over his head while he was fasting; either because of thirst or because of the heat. *A wadi in the neighbourhood of at-Taif.’
Mishkat al-Masabih 1921, Book 8, Fasting, Hadith 55. 1 min read