It is narrated from Sayyiduna Rafi' bin Khadij (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "When Allah, the Mighty and Majestic, loves a servant, He protects him from the world, just as one of you protects his sick person from water."
Hadith Referenceالمعجم الكبير للطبراني / باب الراء / 4281