It is narrated from Sayyiduna Ibn Abbas (may Allah be pleased with them both) that the Prophet (peace and blessings be upon him) said: "The evil eye is real. If anything could outstrip destiny, the evil eye would outstrip it. And when you are asked for bathing water, then bathe."
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 10859