Sahih Muslim | Book 26 | Hadith Number 5535

Narrated by 'Aisha
'Aisha reported: I said: Allah's Messenger, the kahins used to tell us about things (unseen) and we found them to be true. Thereupon he said: That is a word pertaining to truth which a jinn snatches and throws into the ear of his friend, and makes an addition of one hundred lies to it.