Some people asked Messenger of Allah ﷺ about the fore-tellers. Messenger of Allah ﷺ said to them, "They are nothing (i.e., liars)." The people said, 'O Messenger of Allah ﷺ ! Sometimes they tell something which comes out to be true." Messenger of Allah 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."
عَائِشَةُ سَأَلَ أُنَاسٌ رَسُولَ اللَّهِ ﷺ عَنِ الْكُهَّانِ فَقَالَ لَهُمْ رَسُولُ اللَّهِ ﷺ لَيْسُوا بِشَىْءٍ قَالُوا يَا رَسُولَ اللَّهِ فَإِنَّهُمْ يُحَدِّثُونَ أَحْيَانًا بِالشَّىْءِ يَكُونُ حَقًّا فَقَالَ رَسُولُ اللَّهِ ﷺ تِلْكَ الْكَلِمَةُ مِنَ الْحَقِّ يَخْطَفُهَا الْجِنِّيُّ فَيَقُرُّهَا فِي أُذُنِ وَلِيِّهِ قَرَّ الدَّجَاجَةِ فَيَخْلِطُونَ فِيهَا أَكْثَرَ مِنْ مِائَةِ كَذْبَةٍ