Karta's authority over Hindu Undivided Family property and when sales can be reversed

A Karta can sell or mortgage Hindu Undivided Family (HUF) property, but such transactions can be reversed if not justified by necessity or the estate's benefit. The Karta's authority is extensive but fiduciary, requiring transactions to serve legal necessity or benefit the estate. Coparceners can challenge unauthorized sales. HUF property is legally protected, and misuse by the Karta can lead to litigation and tax penalties, emphasizing the need for careful structuring and separation of funds.