*(Ketu in the 3rd forms a trio (of trouble); relations with brothers are spoiled.)*
The 3rd house in astrology represents courage, communication, and younger siblings (specifically brothers). Ketu is the planet of separation, cutting, and detachment.
When Ketu sits in the 3rd house, Dr. Sharma reveals a very specific and painful *Nishaniya*. It creates a "tigdi" (a trio or knot of complications) that directly attacks sibling relationships.
No matter how hard the person tries, there will always be misunderstandings, property disputes, or emotional distance with their brothers ("bhaiyon se baat bigdi hoti hai"). The karmic lesson here is to maintain boundaries and not expect deep emotional support from siblings, as Ketu's job is to cut those specific ties.