(56) باب أَمْرِ الصَّفَا وَالْمَرْوَةِ
'Abd Allaah bin Abi Aufa said the Apostle of Allaah(ﷺ) performed 'Umrah and went round the House(the Ka'bah) and prayed behind the station (Maqam Ibrahim) two rak'ahs and he was accompanied by so many people that he was hidden by them. 'Abd Allaah bin Abi Aufa was asked Did the Apostle of Allaah(ﷺ) enter the Ka'bah ? He replied "No".
Reference: Sunan Abi Dawud 1902
In-book reference: Book 11, Hadith 182
English translation: Book 10, Hadith 1897