Question → How to see which particular planet and which particular relationship or dasha create trouble?
Step 1 - ASD of D9 chart as equal to D1 Chart
Means if your D1 ASD is Leo then make Leo as D9 ASD
Result which ever planet will go to 6,8,12 those planets will suffer.
6th House placed planet give diseases, troubles, and enemies, 6th house problems is solvable.
8th House placed planet gives unsolvable problems and great transformation is that relation.
12th House losses through that significations comes in.
Step 2 - Collect planets placed at 6,8,12 houses and match below condition.
Ven - in 6,8,12 in navamsa spouse, DNA,Health, Married life will have problem.
If ven 8th house problem in marriage , unsolvable throughout life.
If ven 12th house he/she will have losses from spouse or wife specifically..
Jup - in 6,8,12 in kids, education, wisdom, happiness of life is missing.
If jup 6th house kids became your enemy.
Mars - Brothers property, friends, courage will be become problem.
Mer - Childhood, young kids, speech, communication ability
If mars in 6th house then brother suffering from health issue or became your enemy.
Sun - Father , Honor, problems from higher authority.
If sun is at 6th house then legal battle or if sun is 7th lord at 6th house or 6th lord at 7th house
Moon - Mother, mental peace.
Saturn - Long term illness, miseries in life, work is in trouble.
If Sat is at 12 house then losses shall come from employees.
If sat is at 6th house then you will get a rare diseases which is very difficult to solve.
If sat is at 8th house then it will give you long age but continues trouble in your profession.