عَنْ أَبِي جَمْرَةَ قَالَ كُنْتُ أَدْفَعُ النَّاسَ عَنِ ابْنِ عَبَّاسٍ رَضِيَ اللَّهُ عَنْهُمَا فَاحْتَبَسْتُ أَيَّامًا فَقَالَ مَا حَبَسَكَ قُلْتُ الْحُمَّى قَالَ إِنَّ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ قَالَ إِنَّ الْحُمَّى مِنْ فَيْحِ جَهَنَّمَ فَأَبْرِدُوهَا بِمَاءِ زَمْزَمَ
Abu Hamzah (may Allah have mercy on him) narrates: I used to keep people away from Sayyiduna Ibn Abbas (may Allah be pleased with them both). Once, I could not go for a few days. Later, when I went, he said: What kept you from coming to me? I said: I was afflicted with fever. He said: Indeed, the Noble Prophet (peace and blessings be upon him) said: Fever is from the steam of Hellfire, so cool it with the water of Zamzam.