This the point when capacitor will be short for a short duration of time. If you look into details for how a capacitor works in DC circuits, It will be clear that when voltage is applied across capacitor and current starts to flow, it is short for a short duration, and when it accumulates full charge, its like open circuit. The resistor should be there for protection for that period of time when capacitor is short.
Resistance should be added in series with capacitor as the other member suggested.