Rahu Lagan: Apna kaam banta, bhaad mein jaye janta.
Rahu Ascendant: As long as my work gets done, to hell with the rest of the world.
Dr. Sharma uses a famous, blunt Hindi proverb to perfectly summarize the shadow side of Rahu in the 1st house (Ascendant).
Rahu is the planet of obsession, survival, and extreme self-interest. When it sits in the 1st house (the self), the native's entire focus becomes their own survival, success, and desires.
Dr. Sharma explains that these individuals can become highly opportunistic. They are master manipulators who know exactly how to get their work done ("apna kaam banta"). However, once their goal is achieved, they often show zero empathy or concern for the people they used or the collateral damage they caused ("bhaad mein jaye janta"). It is a stark warning about the ruthless nature of an unrefined Rahu.