Peel the pumpkin, cut in half and cut very fine slices. Then cut those slices into a fine strips, place on a large bowl, season with salt and pepper. Then sprinkle with the oil and curry powder and add the mustard. Grate the sixths of the orange over it and squeeze the juice, mix well and let it stand.
Peel the onion, cut in half and cut into fine strips. Put everything in a small bowl and pour the vinegar on it, let it stand.
Mix the arugula under the pumpkin, crumble the feta over it and also divide the onion and vinegar underneath. Mix well again and finish with the raisins.
Also very nice the day after, then it is extra well marinated!