Quraysh or Quraish was the dominant tribe of Mecca upon the appearance of the religion of Islam. It was the tribe to which the IslamicProphetMuhammad belonged and which led the opposition to his message, before eventually converting to Islam and becoming the leaders of the Muslim community.
References
↑Arabic: قريش (Qurayš). Other transliterations include "Quresh", "Quraysh", "Koreish" and "Coreish". Turkish: Kureyş. Albanian: Korreshi)
Sources
Sir William Muir: Life of Mohamet, 1894
Thomas Patrick Hughes (ed.): A Dictionary of Islam, 1885
Benjamin Walker. Foundations of Islam
Karen Armstrong: Muhammad
M. M. Sharif: A History of Muslim Philosophy
Edward William Lane (ed.): Selections from The Quran, 1890
Naseem Sadiqui: Muhammad: The Benefactor of Mankind, 1994
A. Guillaume: Life of Muhammad (Translation of Ibn Ishaq's Sirat), 2004