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[VicDiCara]

It is said that Jupiter spoils the effects of the  house in which it sits and increases the effects of the houses which it aspects. Similliarly Saturn increases the effects of the house in which it is placed and spoils the effects of the houses it aspects. My question is that what if Jupiter is placed in it's own house or the house of it's exaltation and what if Saturn is aspecting it's own house or the house of it's exaltation.
For e.g. if Jupiter is placed in 6th house that means it will spoil the effects of 6th house that means the person doesn't have to fear disease or enemies but what if 6th house is own house or exaltation house for Jupiter?  :)

WHERE is it said that Jupiter spoils the effects of the house in which he sits!?!?!?!?!?