Ashtami Shani is having Shani (Saturn) in 8th house either from Lagna chart (Natal chart) or Rashi (Moon sign). Among the 12 houses, the 8th house is known as highly inauspicious and brings utter distress to the native.
8th House denotes
Longevity, comfort, insult, property through relatives after their death, life insurance, sorrow face, death, difficulties, death cause, struggle for food, diabetes, danger, brother’s enemies, means of fortune of wife, enemies foot, sorrow, laziness, punishment, fear, loss of money, money lender, lotteries, capital, mean friendship, sin, killing animals, handicapped, death sentence, severe difficulty, defective stories, staff, prone to do bad deeds, war, unstable mind, etc..
Shani as Karaka
And among all the planets, the Saturn (Shani Dev) is considered as Karaka of longevity, profession, slavery, employees (staff), iron, business, theft, legal problems, imprisonment, debts, hysterical conditions, oil and black magic.
Shani is also influence natives for secret sex affairs with diseased people, elderly people, etc. Saturn is also considered as Karaka for relationship with widow or widower.
Shani in 8th House – Ashtama Shani
The deadly combination of eighth house and Shani is considered highly dangerous in Hindu Vedic Astrology. The impact of ‘Ashtama Shani’ depends on native’s natal chart and how other planets positioned.
Effects of Ashtama Shani for the natives of each Rashi