Jaisi beeji nasal waisi hogi fasal, Rahu gyarah mein aulaad kare teri nakal.
As the breed is sown, so will be the crop; with Rahu in the 11th, your children will copy you.
The 11th house is the house of gains, but in Lal Kitab, it also has a deep connection to the outcome of your life and your legacy.
When Rahu sits in the 11th house, it creates a very specific karmic mirror regarding your children. Dr. Sharma explains that your children will become an exact copy ("nakal") of your own behavior, morals, and actions.
If you are honest and hardworking, your children will be the same. But if you are deceptive, lazy, or corrupt, your children will copy those exact traits and eventually cause you grief. As you sow, so shall you reap ("jaisi beeji nasal waisi hogi fasal").