Reference: Daleel al-Akhtaa.a yaqa’a feehaa al-Haaj wal-Mu’tamir wat-tahdtheer minhaa – Page 44
Question: What is the manner in which one should cling onto the Ka’bah [between al-Hajar al-Aswad and the door]?
Response: Clinging onto the Ka’bah is by standing [between al-Hajar al-Aswad and the door] and placing the hands, arms and face (cheeks) upon the wall.