The Banu Sa'd (Arabic: بنو سعد / ALA-LC: Banū Saʿd) was one of the leading royal tribes of Arabia during the Islamic prophet Muhammad's era.
They were a subgroup of the larger Hawazin tribal confederation.
They were great warriors and fought many battles with Muhammad against enemies of Islam.
[citation needed] Halima Sadia, Muhammad's wet nurse, belonged to this tribe.
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