Teri khamoshi hi teri barbaadi ka kaaran banegi, jab Chandra bara ki kohsar chalegi.
Your silence will become the cause of your destruction, when the mountain-wind of Moon in the 12th blows.
The 12th house is the house of isolation, hidden enemies, and the subconscious. The Moon (Chandra) represents the mind and emotions.
When the Moon sits in the 12th house, the person becomes highly introverted and emotionally isolated. Dr. Sharma warns of a massive psychological danger: This person has a habit of staying silent ("khamoshi") when they are wronged. They absorb insults and injustice without fighting back.
This silence is toxic. It builds up inside them like a freezing mountain wind ("kohsar"), eventually destroying their mental health and allowing their enemies to ruin them. If you have this placement, you MUST learn to speak up and defend yourself!