Sunan Ibn Majah
Sunan Ibn Majah 677
حَدَّثَنَا هِشَامُ بْنُ عَمَّارٍ، حَدَّثَنَا مَالِكُ بْنُ أَنَسٍ، حَدَّثَنَا أَبُو الزِّنَادِ، عَنِ الأَعْرَجِ، عَنْ أَبِي هُرَيْرَةَ، قَالَ قَالَ رَسُولُ اللَّهِ ـ صلى الله عليه وسلم ـ " إِذَا اشْتَدَّ الْحَرُّ فَأَبْرِدُوا بِالصَّلاَةِ فَإِنَّ شِدَّةَ الْحَرِّ مِنْ فَيْحِ جَهَنَّمَ " .
Unreviewed translation. All hadiths in this collection are available in five languages. Titles and introductions may remain in Arabic.
Hisham ibn Ammar reported to us; Malik ibn Anas reported to us; Abu al-Zinad reported to us, from al-Araj, from Abu Hurayrah, who said: The Messenger of Allah (peace and blessings be upon him) said: ‘When the heat becomes intense, delay the prayer until it cools, for the intensity of the heat is from the blast of Hell.’
Notes and open questions — unreviewed
The source literally refers to the severe heat as arising from the exhalation/breath of Jahannam; ‘blast of Hell’ keeps the imagery concise.
فَإِنَّ شِدَّةَ الْحَرِّ مِنْ فَيْحِ جَهَنَّمَ
The noun فَيْح denotes a wafting/exhalation of heat; the chosen ‘blast’ is a concise rendering of that image.
Would ‘breath’ or ‘waft of heat’ better convey the source's image in natural English?