Sahih Muslim
The Book on Salutations and Greetings (Kitab As-Salam)
Book Number: 026 / Hadith Number: 5536
'Urwa reported from 'A'isha that she said that people asked Allah's Messenger (may peace be upon him) about the kahins. Allah's Messenger (may peace be upon him) said to them: It is nothing (i. e. it is a mere superstition). They said: Allah's Messenger, they at times narrate to us things which we find true. Thereupon Allah's Messenger (may peace be upon him) said: That is a word pertaining to truth which a jinn snatches away and then cackles into the ear of his friend as the hen does. And then they mix in it more than one hundred lies.