Reference: Fataawa al-Lajnah ad-Daa.imah lil-Buhooth al-‘Ilmiyyah wal-Iftaa. – Volume 3, Page 146, Fatwa No.4957
Question: Will the Dajjaal appear, as a group [of people] have confirmed he shall appear, whilst a[nother] group has denied this? [This being] according to what I have read.
Response: Yes, the Dajjaal shall appear, and the ahaadeeth concerning his appearance are authentic, clear and mutawaatir (that which is narrated by such a large number of people that it is impossible that they have invented a lie). Imaam al-Bukhaaree (rahima-hullaah) actually headed a chapter in his Saheeh as such: «Chapter concerning the Dajjaal», and [under which] he mentioned ten ahaadeeth.
And al-Haafidth Ibn Hajar (rahima-hullaah) made this more clear when he explained them [these ahaadeeth] in his book «Fat.h al-Baaree». If it is posisble for you to refer to it, [then do so], or other than it from the books of the Sunnah which mention this.
And with Allaah lies all success and may Allaah send prayers and salutations upon our Prophet (sal-Allaahu ‘alayhi wa sallam) and his family and his companions.