Hadith 8:3117
Abu Bakr narrated to us, he said: Yahya bin Sa'id narrated to us that when he would see the House (the Ka'bah), he would say: "O Allah, You are Peace, and from You is peace, so greet us, our Lord, with peace, and to You is peace."
حدثنا أبو بكر قال نا يحيى بن سعيد أنه كان إذا رأى البيت قال اللهم أنت السلام ومنك السلام فحينا ربنا بالسلام وإليك السلام