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."
أَخْبَرَهُ أَنَّ أَبَا بَكْرٍ بَعَثَهُ فِي الْحَجَّةِ الَّتِي أَمَّرَهُ عَلَيْهَا رَسُولُ اللَّهِ ﷺ قَبْلَ حَجَّةِ الْوَدَاعِ فِي رَهْطٍ يُؤَذِّنُ فِي النَّاسِ أَلاَ لاَ يَحُجَّنَّ بَعْدَ الْعَامِ مُشْرِكٌ وَلاَ يَطُوفُ بِالْبَيْتِ عُرْيَانٌ