 Al-Zubayr was later made one of the eighteen chiefs who each supervised the division of a block of booty-shares.In December 629, on the eve of the Conquest of Mecca, Muhammad sent Al-Zubayr and Ali to intercept a spy who was carrying a letter to the Quraysh.When they could not find the letter in her baggage, they realised she must have concealed it on her person, so they talked her into it.