The BLACK STONE The black Stone (Hajar al-Aswad) Hajar al-Aswad Muslims believe (without proof) that the revered "black stone" (Alhajar Al-Aswad) is a meteorite, that pre-dates creation and fell at the foot of Adam and Eve. It is presently embedded in the southeastern corner of the Kaba. Muslims touch and kiss the black stone during Hajj but non-Muslims are strictly forbidden to even touch it. The stone has been attacked many times and is now composed of several pieces and fragments, bound together by a silver ligature. It is semicircular and measures about ten inches horizontally and twelve inches vertically.

kissing of black stone,
* Narrated Salim that his father said: I saw Allah's Apostle arriving at Mecca; he kissed the Black Stone Corner first while doing Tawaf and did ramal in the first three rounds of the seven rounds (of Tawaf). (Sahih Bukhari 2.673)
* Narrated 'Abis bin Rabia: 'Umar came near the Black Stone and kissed it and said "No doubt, I know that you are a stone and can neither benefit anyone nor harm anyone. Had I not seen Allah's Apostle kissing you I would not have kissed you." (Sahih Bukhari 2.667, Sahih Bukhari 2.675, Sahih Bukhari 2.676, Sahih Bukhari 2.679, Sahih Bukhari 2.680)
* The reason behind this is that the pagan Arabs had the same ritual. Muhamamd kept the same practice, and Umar did feel repugnant about the practice. However, he followed the practice of Muhammad.