Comparison of concentration prospect of sharia, with finance concentration?

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This time I took the concentration of sharia in the department of management .. but most of my friends say if Islamic science can not develop better than if you take the financial concentration .. because more extensive network of financial knowledge than the sharia .. he said if finances get into the company "and also enter the network of Islamic banks become larger, and hold if concentrations of sharia Islamic banks can only enter it .. here I try to stick with my choice .. given constructive input please .. thanks a lot ^ ^