Beautiful Hadith is about Hajj

Narrated Abu Huraira RA: On the Day of Nahr (10th Dhul-Hijja, in the year prior to the last Hajj of the Prophet (peace be upon him) when Abu Bakr was the leader of the pilgrims in that Hajj) Abu Bakr sent me along with other announcers to Mina to make a public announcement: "No pagan is allowed to perform Hajj after this year and no naked person is allowed to perform the Tawaf around the Ka`ba. Then Allah's Messenger (peace be upon him) sent `Ali to read out the Surat Bara'a (at-Tauba) to the people; so he made the announcement along with us on the day of Nahr in Mina: "No pagan is allowed to perform Hajj after this year and no naked person is allowed to perform the Tawaf around the Ka`ba." (Bukhari - Vol. 1, Book 8, Hadith 36)