By Mark McCallum
In Granada, Spain
Muslims heralded the return of a mosque to Granada
An Islamic conference in the Spanish city of Granada has called on Muslims around the world to help bring about the end of the capitalist system.
The call came at a conference titled 'Islam in Europe' attended by about 2,000 Muslims.
Earlier this week Granada saw the first official opening of a mosque in Spain for more than 500 years.
The keynote speaker at the conference was Umar Ibrahim Vadillo, leader of the worldwide Muslim group known as Murabitun.
The group is strongly opposed to capitalism.
Mr Vadillo said America's economic interests had become the religion of the world and that people slavishly adjusted their lifestyles to suit the capitalist model.
But he said capitalism cannot sustain itself and is bound to collapse.
Disapproval of terror
Mr Vadillo, a Spanish Muslim, called on all followers of Islam to stop using western currencies such as the dollar, the pound and the euro and instead to return to the use of the gold dinar.
He said the introduction of the gold dinar to the world's economies would be the single most unifying event for Muslims in the modern era.
Shortly afterwards, he said, the capitalist structure would quickly fall and it would make the Wall Street crash of 1929 seem minor by comparison.
The conference also heard from Abu Bakr Rieger, a German Muslim.
He said Islam could only be practised in Europe in a traditional way, not in one adapted to European values and structures.
He also said private terrorism would find no approval among European Muslims.