Order 32 rule 2 of cpc

You have not disclosed the complete facts.

sir,

My father has instituted a suit for declaration and permanent injunction claiming that i had transfered  propertyin my name forgedfully as he was not of sound mind at the time of transfer of property and wants to regain ownership of the Property. On the same date he had given a special power of attorney to my sister to look after the entire suit. My question is whether a person of unsound mind can file a suit in the house of court and whether there is any validity of this SPA or it's void ab initio since in this SPA he has himself declared to be a person of unsound mind