The Rites of Hajj (Kitab Al-Manasik Wa'l-Hajj)
Dawud :: Book 10 : Hadith 1893
Narrated AbdurRahman ibn Safwan:
When the Apostle of Allah (peace_be_upon_him) conquered Mecca, I said (to myself): I shall put on my clothes, and my house lay on the way, I shall watch how the Apostle of Allah (peace_be_upon_him) behaves. So I went out. I saw that the Prophet (peace_be_upon_him) and his Companions had come out from the Ka'bah and embraced the House (the Ka'bah) from its entrance (al-Bab) to al-Hatim. They placed their cheek on the House (the Ka'bah) while the Apostle of Allah (peace_be_upon_him) was amongst them.