From Sahih Bukhari (Hadith 1593):
Narrated Abu Sa`id Al-Khudri:The Prophet (ﷺ) said "The people will continue performing the Hajj and `Umra to the Ka`ba even after the appearance of Gog and Magog." Narrated Shu`ba extra: The Hour (Day of Judgment) will not be established till the Hajj (to the Ka`ba) is abandoned
Reference: Bukhari 1593