Saturn is known as the planet of discipline, responsibility, limitations, and hardships. Its placement in the 1st house for lagna Aries can bring about a variety of effects. In this location, Saturn is in debilitated state which suggests that it may not produce its full potential in terms of results.
Saturn rules the 10th and 11th houses for Aries ascendant- the house of profession and income sources respectively. The presence of Saturn in the first house suggests that individuals born under this placement will be inclined towards professions that require immense hard work, dedication, discipline, and perseverance. Such individuals will have a strong work ethic and are likely to achieve success in their chosen field by virtue of their resilience.
Individuals with Saturn in their first house must learn to balance their personal lives with professional ambitions. This is because while Saturn helps create a strong professional foundation, it also has a reputation for creating obstacles and delays. Thus one needs to find ways to achieve equilibrium between domestic responsibilities and professional pursuits.
Saturn is known as the natural karaka for the eighth house which represents difficulties or challenges faced by a person during his/her lifetime. As mentioned earlier, Saturn brings hardships but it also endows people with resilience to face these challenges head-on.
Additionally, being lord of the eleventh house - saturn does provide prosperity gains during its Dasha period or when the time is good related to tenth house matters (like career or finances). But due to its position in debilitation such gains might come later on rather than immediately
Saturn's placement within the 1st house affects other houses through its aspect too. It aspects houses like third (representing communication skills & siblings), seventh (for marriage/partnerships) and tenth (for career) specifically.
The aspect on the third-house results in individual building focused communication skills since they tend only spend time communicating where necessary unlike some without this placement who may chat idly more often. On the other end, relationships could be strained due to its aspect on the seventh house. This would require the native to work harder and longer to build relationships- It could also mean that marriages or partnerships formed during Saturn's Dasha would come unhinged after its Dasha period ends.
In essence, Saturn in the first house of an Aries ascendant person produces mixed results as a result of being in a debilitated state. While it brings substantial growth potential in one's professional life due to its association with career houses, it requires dedication to overcome any obstacles that may arise during one’s life journey. Additionally, it may take time for one to taste success prosperities typically associated with this placement (like wealth gains) but they will come at some point if worked towards diligently. Overall those born under this placement have immense potential for growth and can achieve significant success by dedicating themselves to their passions while maintaining balance within their personal lives.