However , the ShiË at Ë AlÄ `` , `` the Party of Ali '' , were again disappointed when the Abbasid dynasty took power , as the Abbasids were descended from Muhammad 's uncle , ` Abbas ibn ` Abd al-Muttalib and not from Ali . However , the ShiÊ '' at Ê '' AlÄ `` , `` the Party of Ali '' , were again disappointed when the Abbasid dynasty took power , as the Abbasids were descended from Muhammad 's uncle , ` Abbas ibn ` Abd al-Muttalib and not from Ali .