Generally, you can buy land from an SC/ST person in Madhya Pradesh if they acquired it through a sale deed. However, if the land was originally granted by the government (assigned land), the SC/ST owner needs permission from the District Collector to sell it to anyone. Supreme Court rulings primarily restrict non-SC/ST individuals from purchasing government-granted land to SC/ST individuals, not the other way around, provided the land wasn't government-assigned without proper permissions.