Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
nasai-kubra:3017Qutaybah b. Saʿīd > Mālik > Sumay a freed slave of Abū Bakr > Mawlāh Abū Bakr

[Machine] From a man of the companions of the Prophet صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ, that he saw the Prophet صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ fasting while traveling, pouring water on his head due to the intensity of the heat.  

الكبرى للنسائي:٣٠١٧أَخْبَرَنَا قُتَيْبَةُ بْنُ سَعِيدٍ قَالَ حَدَّثَنَا مَالِكٌ عَنْ سُمَيٍّ مَوْلَى أَبِي بَكْرٍ عَنْ مَوْلَاهُ أَبِي بَكْرٍ

عَنْ رَجُلٍ مِنْ أَصْحَابِ النَّبِيِّ ﷺ أَنَّهُ رَأَى النَّبِيَّ ﷺ «صَائِمًا فِي السَّفَرِ يَصُبُّ عَلَى رَأْسِهِ الْمَاءَ مِنْ شِدَّةِ الْحَرِّ»