Iranian Barberry Rice With Chicken

INGREDIENTS:

*Step One Making the Saffron Water:

1 teaspoon Saffron
A pinch of Sugar
5 tablespoons Boiling hot water

*Step Two Making the Chicken:

5-6 pieces Chicken thighs
Water (as you needed)
1 tablespoon Salt
2 tablespoons Butter
1 large Onion (chopped)
2 Garlic (chopped)
2 large Tomatoes (grated)
1 tablespoon Tomato paste
1/2 teaspoon Turmeric powder
1/2 teaspoon Coriander powder
1/2 teaspoon Paprika powder
Salt to taste
Water (as needed)
3 tablespoons Saffron water

*Step Three Making the Rice:

3 cups Basmati Rice (washed and soaked for 1 hour)
4 litres Boiling water
1 tablespoon Salt
1/2 cup Rice water (collect from the pot while cooking the rice)
3 tablespoons Oil
1/4 cup Oil
1 cup Barberries (clean and washed)
3 tablespoons Butter
2 tablespoons Sugar
3 tablespoons Saffron

Pistachio for decoration (Optional)