Mars (3) – is the third vicious planet that remains in a house for one and a half-month.
It is harmful in terms of health/accident especially when it relates to Uranus (0) both in the original horoscope and the transiting horoscope.
Accidents and health issues will easily occur especially when they are both related in the original horoscope and the transiting horoscope.
Other cases will concern recklessness and frustration only. Transiting Mars could be deadly if it relates to Saturn (7) and Uranus (0) simultaneously. However, it will not be obvious when Mars is beneficial.
Moreover, it is generally slightly beneficial except when it is the ruling planet of financial house and relates to its friendly pair, elemental pair or kindred pair, extreme benefits such as a huge sum of money can be expected.
Rahu (8) -is supposedly equally vicious as Mars and remains in a house for 1.5 year.
It is not mortally harmful yet it could still lead to incapacitation, lawsuits, a trouble caused by trivial matters, indulgence or being tricked. This could lead to financial losses.
Even-though Rahu is related to its friendly pair, elemental pair, kindred pair, including its friendly pair Saturn (7) it will still be harmful without any exceptions in both the original horoscope and the transiting horoscope.
Moreover, transiting Rahu that relates to its enemy pair Mercury (4) will cause twice more harm. Additionally, Mercury (4) that is Tanu-Lak will have its harmful effect on Tanu Bhava which represents the native.
If Mercury (4) is a ruling planet of a house or a floating planet in a house it will cause trouble to the house it is in.
Furthermore, transiting Rahu (8) that in conjunction to the original Rahu (8) and also relates to the ascendant will be harmful to the native with no side benefits at all.