Saturn gets debilitated when it is placed in the sign of Aries, which means that Saturn becomes very weak by virtue of its placement in this sign. Retrograde debilitated Saturn in the fourth house of a horoscope becomes one of the most significant planets in that horoscope due to which it should be studied very carefully. This is due to the reason that when retrograde debilitated Saturn is placed in the fourth house of a horoscope in the sign of Aries, the sign Capricorn ruled by Saturn falls in the first house of that horoscope. Hence Capricorn becomes the first house or ascendant of that horoscope and Saturn being the planetary lord of the sign Capricorn becomes the lord of the first house or the lord of ascendant in such horoscope.
Since the house of ascendant is the most important house of a horoscope, the effect of any benefic or malefic influence on this house of a horoscope can reflect in the entire horoscope, positively or negatively, depending on whether the influences affecting this house are positive or negative. Similarly, any type of weakness or strength experienced by the lord of ascendant in a horoscope can also affect the entire horoscope significantly, positively or negatively. When retrograde debilitated Saturn is placed in the fourth house of a horoscope, the lord of ascendant becomes debilitated and hence the entire horoscope becomes weak. There are no doubts that when retrograde Saturn is placed in its sign of debilitation in the fourth house of a horoscope, the chances of such horoscope behaving in strong manner are reduced as the lord of ascendant for such horoscope is very weak. Therefore, even benefic retrograde debilitated Saturn placed in the fourth house of a horoscope may not do much good for the native as it indicates weakness to the entire horoscope.
However all is not lost and there are still many factors that can strengthen and improve such horoscope, as no single planet can govern an entire horoscope on its own, whether such planet is weak or strong, positive or negative; and even if such planet is the lord of ascendant in a horoscope. The influence of benefic planets on the first house of such a horoscope or the influence of benefic planets on such retrograde debilitated Saturn in such a horoscope can provide extra strength to the horoscope and the results may improve. However the influence of malefic planets on the first house of such a horoscope or the influence of malefic planets on such retrograde debilitated Saturn in a horoscope can make the situation even worse. This is due to the fact that such malefic influences can further weaken the overall positive energy of such horoscope due to which the native may have to suffer a lot in many spheres of his life. Therefore, when retrograde debilitated Saturn is placed in the fourth house of a horoscope, strong positive influences are required to make such horoscope work in a positive manner as otherwise, such horoscope may become negative or very weak.
When supported by other benefic planets, retrograde debilitated Saturn in the fourth house of a horoscope can bless the native with good results related to marriage, profession, fame, authority and many other types of good results depending on the overall tone of his horoscope. Benefic retrograde debilitated Saturn in the fourth house can bless some natives with posts of authority in the house of government through jobs or through politics depending on their overall horoscopes. Accordingly these natives may achieve such authority as army officers, police officers, revenue officers, education officers and many other types of professionals. For example, if benefic retrograde debilitated Saturn is placed in the fourth house of a horoscope in the sign of Aries along with benefic Mars, benefic Sun is placed in the seventh house of this horoscope in the sign of Cancer along with benefic Mercury; and benefic Venus is placed in the eighth house of this horoscope in the sign of Leo, the native may join the army. The native blessed by such benefic retrograde debilitated Saturn and other benefic planets may achieve a post of authority in the army and he may witness success and recognition as an army officer. Apart from this, benefic retrograde debilitated Saturn in the fourth house can bless the natives with success through many other fields of profession, depending on their overall horoscopes.
On the other hand, malefic retrograde debilitated Saturn in the fourth house of a horoscope can trouble the native under its influence with problems related to marriage, profession, finances, health and many other types of problems depending on the overall tone of his horoscope. Some natives may get hit by this malefic retrograde debilitated Saturn in the sphere of their health due to which they may have to come across many types of health problems and diseases which may become serious if this malefic retrograde planet draws support from other disease promoting planets in one such horoscope. In extreme cases when supported by other malefic planets, malefic retrograde debilitated Saturn in the fourth house of a horoscope can afflict the native under its impact with a life threatening disease which may afflict much pain on him for many years and which may ultimately kill him at a young age, unless there is a strong life saving planet in his horoscope.