Mishkat al-Masabih 2573
Abu Huraira said:
On the day of sacrifice at the pilgrimage before the Farewell Pilgrimage over which the Prophet had appointed Abu Bakr, he sent me with a group whom he had ordered to announce among the people, “After this year no polytheist may perform the pilgrimage, and no naked person may go round the House.” 

Bukhari and Muslim.
وَعَنْ أَبِي هُرَيْرَةَ قَالَ: بَعَثَنِي أَبُو بَكْرٍ فِي الْحَجَّةِ الَّتِي أَمَّرَهُ النَّبِيُّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ عَلَيْهَا قَبْلَ حَجَّةِ الْوَدَاعِ يَوْمَ النَّحْرِ فِي رَهْطٍ أَمَرَهُ أَنْ يُؤَذِّنَ فِي النَّاسِ: «أَلَا لَا يَحُجُّ بَعْدَ العامِ مشرِكٌ وَلَا يطوفَنَّ بِالْبَيْتِ عُرْيَان»