The Quraysh boycott the Banu Hashim
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Islam began to spread among the tribes. The Quraysh were so concerned that they decided to write a document containing a ban on the Banu Hashim and Banu al-Muttalib. They declared that they would not marry the women of these clans or give any in marriage to them, or sell them any goods or buy anything from them. The Quraysh displayed the parchment announcing the ban inside the Ka'bah in order to give it authority.