NAISARGIKA OR NATURAL KARAKA SYSTEM

When a Jyotish uses the Naisargika or natural karaka system, he/she looks at each graha and its indication/signification it plays in one's chart:
Sun: Ravi or Surya- Atma, physical constitution, eyes-seeing, health, east direction and dawn : Karaka of the 1st house ( Lagna), 10th (Career), 9th, and 5th houses.
Jupiter: Guru or Brihaspati - Family, wealth matters, expansion children, guru-teachers, religion, fortune, elder brothers: Karakak of the 2nd , 5th, 9th, and 11th houses. The NE direction.
Mars: Mangala - Courage, younger siblings, strength or stamina, blood, defense, enemies: Karaka of the 3rd, 6th, 4th, 5th houses. The S direction.
Moon: Chandra - Mother, compassion, feelings, mind & emotions, milk and ghee (soma too!), pearls, the evening: Karaka of the 4th, 1st and 11th houses, and the NW direction.
Venus: Sukla -wife and husband, martial relationships, vehicles, pleasures of the bed, fluids, perfumes, dance , music, song, e.g. feeding the senses: Karaka of the 7th house, 4th house, 12 house . The SE direction.
Mercury: Buddha - speech, learning, memory, credits, honors, friends, business, adeptness, mathematics: Karaka of the 2nd, 4th, 5th, 10th and 11th houses and owner of the North direction.
Saturn: Sani - longevity, troubles, grief, losses, ailments, limps, dishonor or fall from grace, hard labor, imprisonment, renunciation, one-pointedness. Karaka of the 8th, 6th, 5th and 12th and the West direction.
Rahu: accidents, occult knowledge, life in a foreign land, poisons, skin dis-eases, arguments, darkness. Karaka of the 7th, 9th and 6th houses. Owns the SW direction.
Ketu:- occult knowledge, moksha, detachment, fastidious, imprisonment. Karka of the 12th, 9th and 8th houses. Owns the NW direction.