What did the Prophet Muhammad (peace be upon him) do when the caravan of merchandise arrived at Medina on a Friday while he and a group of 12 were present?
 Narrated Jabir bin `Abdullah:                     A caravan of merchandise arrived at Medina on a Friday while we were with the Prophet All the people left (the Prophet and headed for the caravan) except twelve persons. Then Allah revealed:-- 'But when they see some bargain or some amusement they disperse headlong to it.' ..(62.11)