Some people asked Allah's Messenger (ﷺ) about the fore-tellers. Allah's Messenger (ﷺ) said to them, "They are nothing (i.e., liars)." The people said, 'O Allah's Messenger (ﷺ) ! Sometimes they tell something which comes out to be true." Allah's Messenger (ﷺ) said, "That word which comes to be true is what a jinx snatches away by stealing and then pours it in the ear of his fore-teller with a sound similar to the cackle of a hen, and then they add to it one-hundred lies."
Sahih al-Bukhari Book 78, Hadith 237
← Previous Hadith There was a state of fear in Medina. Allah's Messenger (ﷺ) rode a horse belonging to Abu Talha (in order to see the matter). The Prophet (ﷺ) said, "We could not see anything, and we found that horse like a sea (fast in speed).

Sahih al-Bukhari Book 78, Hadith 236 Next Hadith → That he heard Allah's Messenger (ﷺ) saying. "Then there was a pause in the revelation of the Divine Inspiration to me. Then while I was walking all of a sudden I heard a voice from the sky, and I raised my sight towards the sky and saw the same angel who had visited me in the cave of Hira,' sitting on a chair between the sky and the earth."

Sahih al-Bukhari Book 78, Hadith 238