Quarmatians sack Mecca, carry the Black Stone away from the Ka'aba

Sources, including the 2007 Britannica, state that the damage to the Black Stone occurred as the result of a theft in 930 CE, when Qarmatian warriors sacked Mecca and carried the Black Stone away to their base in Ahsa, in medieval Bahrain. According to the historian Al-Juwayni, the Stone was returned twenty-two years later, in 951, under somewhat mysterious circumstances; wrapped in a sack, it was thrown into the Friday Mosque of Kufa accompanied by a note saying "By command we took it, and by command we have brought it back." Its abduction and removal caused further damage, breaking the stone into seven pieces.