Sahih Muslim | Book 26 | Chapter 15

Narrated by 'Aisha
'Aisha (the wife of Allah's Apostle) said: When Allah's Messenger (may peace be upon him) fell ill. Gabriel used to recite these verses. "In the name of Allah. He may cure you from all kinds of illness and safeguard you from the evil of a jealous one when he feels jealous and from the evil influence of eye.

Narrated by Abu Sa'id
Abu Sa'id reported that Gabriel came to Allah's Messenger (may peace be upon him) and said: Muhammad, have you fallen ill? Thereupon he said: Yes. He (Gabriel) said: "In the name of Allah I exercise you from everything and safeguard you from every evil that may harm you and from the eye of a jealous one. Allah would cure you and I invoke the name of Allah for you.

Narrated by Abu Huraira
Abu Huraira reported so many ahidith from Allah's Messenger (may peace be upon him) and he reported Allah's Messenger (may peace be upon him) as saying: The influence of an evil eye is a fact.

Narrated by Ibn 'Abbas
Ibn 'Abbas reported Allah's Messenger (may peace be upon him) as saying: The influence of an evil eye is a fact; if anything would precede the destiny it would be the influence of an evil eye, and when you are asked to take bath (as a cure) from the influence of an evil eye, you should take bath.