Heat a pan over medium heat and add a splash of vegetable oil. Sauté the chopped onion until soft and translucent.

Stir in the minced garlic, cumin, coriander, and chili powder; cook until fragrant (about 1 minute).

Add the ground beef to the mixture, season with salt and pepper, and cook until browned and crumbly (about 7-10 minutes). Drain excess fat if necessary.

Roll out puff pastry on a floured surface and cut into circles (about 3 inches in diameter). Place a spoonful of filling on each circle, fold over to create half-moons, and seal the edges tightly.

Heat vegetable oil in a deep skillet over medium-high heat (around 350°F). Fry sambusas until golden brown on both sides (approximately 3-4 minutes per side) and drain on paper towels.

Serve hot with dipping sauces like spicy mayo or yogurt sauce.