Kya Bhi Section 83 Ka Significance Hai?

Maine Section 84 ka concept suna hai, jo mental incapacity ke case mein kaam aata hai, lekin Section 83 mein kya hai? Kuch textbooks mein yeh likha hai ki Section 84 ka signifiance Section 83 se hi hota hai. Toh Section 83 kya hai? Kya yeh Section 84 ka ek part hai? Maine abhi tak kisi case mein jaankaari nahi payi hai jo Section 83 ka mention karta ho. Koi bhai mujhe bataaye ki kya yeh Section 83 hai aur kya yeh humme khaas kuch sikhata hai?