Planets in houses · Dusthana
Budh in the 8th house
Mercury · Ayu Bhava
Budh is the karaka (significator) of intellect, speech, business and learning. The 8th house, called Ayu Bhava, shows longevity, secrets and sudden events. When Budh sits here, these matters take on its colour.
In the 8th house a benefic protects longevity and brings interest in research and hidden subjects, though its outward results are reduced.
The 8th house is a dusthana (house of difficulty), so results here come through challenges and need conscious handling.
Budh gives its best results here when it is exalted in Kanya, in its own sign (Mithuna and Kanya) or in a friendly sign, and when it is not combust.
Results are weaker if Budh is debilitated in Meena, combust, or afflicted by malefics.
In transit (gochar)
When Budh transits the 8th house counted from your Moon sign, the period is traditionally favourable.
A single placement is never read alone: sign, aspects, conjunctions, dasha and the whole chart change the outcome.