There is a black stone in the north Eastern of the Ka'ba. This stone is called Hajr-e-Aswad [Black stone]. This stone was probably part of a meteoroid.That fell near Mecca on a Mountain called Abu Qubais. At the time of Construction of Ka'ba. Hadrat Ibrahim [Abraham].Brought it down and placed in the corner of the Ka'ba .as a great sign and a monument, Anyone who performs Pilgrimage is expected to kiss this Memorial stone. This stone part of Allah's mark and is a sign of Him. Being the Supreme being, One loves thing that belong to one's beloved, The same philosophy exists behind kissing the stone. '' This stone has no Power and Provides neither Benefit nor Harm to Anyone''