Abu Bakr sent him, during the Hajj that the Messenger of Allah appointed him to lead before the Farewell Pilgrimage, with a group of other to announce to the people: "No idolater is to perform Hajj after this year, and no one is to circumambulate the House naked."
Reference: Sunan an-Nasa'i 2957 In-book : Book 24, Hadith 0 English translation : Vol. 3, Book 24, Hadith 2960
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