Musnad Ahmad 25:644

Yazid narrated to us, Ibn ‘Awn informed us, from Mujahid, who said: They mentioned him—meaning the Dajjal—and said: "It is written between his eyes: K-F-R." Ibn Abbas said: "I did not hear him say that, but he said: 'As for Ibrahim, peace be upon him, then look at your companion'—Yazid said: meaning himself, may Allah bless him and grant him peace—'And as for Musa, he is a dark-skinned man, with curly hair, tall, upon a red camel, bridled with a rope of palm fiber, as if I am looking at him, having descended from the valley, reciting the Talbiyah.'" My father said: "Hashim said: The *khulbah* is the palm fiber."