The 11th house is the house of gains, fulfillment, and the ultimate outcome of life. Rahu is the planet of poison, illusion, and sudden destruction.
When Rahu is severely afflicted or negative in the 11th house, Dr. Sharma compares it to a "dirty drain" ("gandi naali") flowing through the family's destiny. This creates a terrifying generational curse.
He reveals that in such families, three generations (e.g., grandfather, father, and son) can never be happy or prosperous at the same time ("teen peedhi ikkathi khush nahi rehti"). If the grandfather is rich, the son will suffer. If the son succeeds, the grandson will fail. The toxic energy of Rahu constantly drains the family's collective happiness.