Narrated Abu Huraira:
On the Day of Nahr (10th of Dhul-Hijja, in the year prior to the last Hajj of the Prophet (s.a.w.a.) 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 (s.a.w.a.) 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.
Abu Huraira said, "Abu Bakr sent me in that Hajj in which he was the chief of the pilgrims along with the announcers whom he sent on the Day of Nahr to announce at Mina: "No pagan shall perform Hajj after this year, and none shall perform the Tawaf around the Ka`ba in a naked state." Humaid added: That the Prophet (s.a.w.a.) sent `Ali bin Abi Talib (after Abu Bakr) and ordered him to recite aloud in public Surat-Baraa. Abu Huraira added, "So `Ali, along with us, recited Bara'a (loudly) before the people at Mina on the Day of Nahr and announced "No pagan shall perform Hajj after this year and none shall perform the Tawaf around the Ka`ba in a naked state."
Narrated Anas Ibn Malik:
"The Prophet (s.a.w.a.) sent Abu Bakr with the (announcement of) Surah Baraa'ah (the declaration to publicize the disavowal of the idolaters). Then he summoned him and said: 'It is not right for anyone to convey this except a man among my family.' "So he called for 'Ali and gave it to him."
It was narrated from Muharrar bin Abi Hurairah that his father said:
"I came with Ali Ibn Abi Talib when the Messenger of Allah (s.a.w.a.) sent him to the people of Makkah with Surah Baraa'ah." He said: "How did you announce? He replied: We announced that no one would enter Paradise but a believing soul, no one was to circumambulate the House naked: whoever had a treaty with the Messenger of Allah (s.a.w.a.), then for its period, or, it extended to four months, and when four months had passed, and that Allah is free from (all) obligations to the idolaters and so is His Messenger. No idolater was to perform Hajj after this year. I kept on announcing it until my voice grew hoarse.