'Dhaara 39 vs 40: Kya Farq hai?'

Yaar samajh nahi aaya, please help. Main DU LLB Entrance ki taiyari kar raha hoon aur is topic mein confusion hai. Sabhi keh rahe hain ki Dhaara 39 aur Dhaara 40 mein koi bhautik farq nahi hai, lekin maine ek example dekhkar socha ki ye dono alag-alag hai.

Maine socha tha ki Dhaara 39 mein lease kee definition hai, jabki Dhaara 40 mein kuch aur chizein hain jo lease ke sath kaam karti hain. Lekin phir se bhi problem yeh hai ki kai authors aur textbooks in dono ko ek jaise hi dikhate hain.