The Book of the Prayer
2/4. Chapter:
Waiting For It To Cool Down Before The Zuhr Prayer When The Heat Is Intense
Sunan Ibn Majah
حَدَّثَنَا عَبْدُ الرَّحْمَنِ بْنُ عُمَرَ، حَدَّثَنَا عَبْدُ الْوَهَّابِ الثَّقَفِيُّ، عَنْ عُبَيْدِ اللَّهِ، عَنْ نَافِعٍ، عَنِ ابْنِ عُمَرَ، قَالَ قَالَ رَسُولُ اللَّهِ ـ صلى الله عليه وسلم ـ " أَبْرِدُوا بِالظُّهْرِ " .
It was narrated that Ibn 'Umar said: "The Messenger of Allah said: 'Wait for it to cool down before you pray the Zuhr.'"
Reference : Sunan Ibn Majah 681In-book reference : Book 2, Hadith 15English translation : Vol. 1, Book 2, Hadith 681