Mujahid reported,

We were with Ibn Abbas when people mentioned the Dajjal. They said that the letters K-F-R are written between his eyes.He asked, "What are you saying?"They replied, "They say that K-F-R is written between his eyes."Ibn Abbas said, "I did not hear him say that. Rather, he said, 'As for Ibrahim عليه السلام, look at your companion. As for Musa عليه السلام, he is a brown-skinned man with curly hair, riding a red camel whose halter is made of palm fiber. It is as if I am looking at him as he descends into the valley calling out the talbiyah.'"

Ahmad 2501

Sahih

حدثنا محمد بن أبي عدي عن ابن عون

عن مجاهد قال

كنا عند ابن عباس فذكروا الدجال فقالوا إنه مكتوب بين عينيه ك ف ر قال ما تقولون قال يقولون مكتوب بين عينيه ك ف ر قال فقال ابن عباس لم أسمعه قال ذلك ولكن قال أما إبراهيم عليه السلام فانظروا إلى صاحبكم وأما موسى عليه السلام فرجل آدم جعد على جمل أحمر مخطوم بخلبة كأني أنظر إليه إذا انحدر في الوادي يلبي

أحمد 2501صحيح
Contents
Reference
Commentary
Ayat
Collection
Musnad Ahmad
Book
Abdullah bin Abbas bin Abdul-Muttalib
Numbering
Darussalam 2501
Ahmad 2501