Mangal aath mein jo badle ki aag sekta hoga, Mahabharat tu dekhta hoga.
The one who warms himself with the fire of revenge with Mars in the 8th, you will see a Mahabharata.
Mars (Mangal) is the planet of war, anger, and weapons. The 8th house is the house of hidden things, death, and sudden destruction.
When Mars sits in the 8th house, it creates a highly dangerous, explosive energy. Dr. Sharma warns that if this person holds onto grudges and fuels the "fire of revenge" ("badle ki aag"), it will not just harm their enemies—it will cause absolute destruction.
Their anger will trigger a literal "Mahabharata" (a massive, catastrophic war) in their own life, destroying their family, their peace, and themselves. The only remedy for Mars in the 8th is absolute forgiveness and letting go of revenge.