which classic has information on divisional charts?

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Hari Om!

Namaste

 

Can someone tell me which classic has detail information on

judging of divisional charts like navamsha dashamsha etc?

BPHS only has information about how to plot them and some very basic

of what is to be judged.

 

For example when BPHS says that navamsha should be used for judging

spouse does it mean that navamsha chart should be rotated taking 7th

house of navamsha as lagna?

 

Do the benefics and malefics get modified because the lagna changes?

 

Shri Mantreshwara (Phaladeepika) says that the rotation of bhava

chart 9not navamsha) should be done around 7th house to get spouse's

chart.

 

Is Phaladeepika incorrect?

 

Please clear my confusion.

 

Thanks

Sagar.