وَعَنِ ابْنِ عَبَّاسٍ
أَنَّ النَّبِيَّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: كَانَ يعلمهُمْ من الْحمى وم الأوجاع كلهَا أَن يَقُولُوا: «بِسم الله الْكَبِيرِ أَعُوذُ بِاللَّهِ الْعَظِيمِ مِنْ شَرِّ كُلِّ عرق نعار وَمن شَرّ حر النَّارِ»
He said that the Prophet (sallallahu alayhi wa sallam) used to teach them to say when afflicted by fever or any pain, “In the name of God, the Great, I seek refuge in God, the Mighty, from the evil of every vein that bleeds and from the evil of the heat of hell.” Tirmidhi transmitted it, but said this was a gharib tradition which he knew only among the traditions of Ibrahim ibn Ismail who is declared to be weak in tradition.
Mishkat al-Masabih 1475, Book 6, Funerals, Hadith 32. 1 min read