I would clarify that retrograde Saturn (Vakri Shani) is inherently malefic.  It becomes more intense and malefic during the period Saturn gets retrograde in transit. In your case, with Sagittarius Lagna, Saturn governs the 2nd and 3rd houses, wealth, speech, family, effort, and courage and its placement in the 11th house of gains is generally considered auspicious, even for a natural malefic as it is an upachaya house.  Saturn improves with time, and retrogression adds depth, making results slower but more enduring. You are likely to earn through sustained effort, discipline, and practical networking rather than quick luck. Early phases of life may show delays, financial pressure, or struggles in realizing desires, but after maturity, particularly post 30–36 years, this Saturn can give regular income, reliable gains, and strong support from influential or older individuals. Thus, Saturn here is ultimately beneficial, provided you maintain patience, ethical conduct, and consistency, as Shani rewards perseverance and punishes haste.