Mangal Dosha, also known as Kuja Dosha, occurs when the planet Mars (Mangal) is positioned in certain houses of a person's birth chart (Kundali). Specifically, Mangal Dosha is formed if Mars is placed in the 1st, 2nd, 4th, 7th, 8th, or 12th house from the ascendant (Lagna), Moon, or Venus. https://www.astrobharati.in/