Some people asked the Messenger of Allah (ﷺ) about soothsayers. He (ﷺ) said, "They are of no account." Upon this they said to him, "O Messenger of Allah! But they sometimes make true predictions." Thereupon the Messenger of Allah (ﷺ) said, "That is a word pertaining to truth which a jinn snatches (from the angels) and whispers into the ears of his friend (the soothsayers) who will then mix more than a hundred lies with it."

[Al-Bukhari and Muslim].

The narration in Al-Bukhari is: "The angels descend in the clouds and mention matters which has been decreed in heaven; Satan steals a hearing (listens to it stealthily) and communicates it to the soothsayers who tell along with it a hundred lies."