Amr bin Shu'ayb narrated from his father that he said: I performed tawaf with Sayyiduna Abdullah (may Allah be pleased with them both). When we came to the back of the Ka'bah, I said: Why do you not seek refuge? He said: "A'udhu billahi min al-nar" (I seek refuge with Allah from the Fire). Then he went on until he kissed the Black Stone, stood between the corner and the door, placed his chest, his face, his forearms and his palms (against it), spreading them out fully, and then said: In this way I saw the Messenger of Allah (peace and blessings be upon him) do it.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الحج / 9333