Income earned through leasing one's property to the bank

Q: Can you explain to me the reason why Ulamaa so severely condemn the earnings of banks? In today’s times, the majority of the wealth in banks is acquired through the deposits of people which are from halaal. Hence, if one leases out his property to a bank, the income should be halaal based on the principle that if 50% or more of one’s income is halaal and such a person has to give you a gift, you can accept it.

Will Shaitaan, Jannat and jahannum be destroyed before qiyaamah

Q:

  1. I heard in many speeches of Islamic scholars and Ulama that on the day of qiyaamah every thing will be destroyed including angels, sky and every thing except Allah. In that case will shaitaan also die on the day of qiyaamah? If so what will be his reaction, while his death is this mentioned in any authenticated hadith?
  2. I heared that Jannah is being prepared from long back to the day that the person enters in to Jannah. And allah subahanawa thaala him self makes Jannatul firdous five times a day more beautiful.  If every thing will be destroyed at the time of Qayamat what will be situation of Jannah and ​Jahannam?

Inheritance

Q: In the Will of a deceased, liabilities reflected include various amounts described as:

Unpaid Zakaat

Unkept Fasts

Unperformed Salaat

Unfulfilled Kaffarah

Undischarged Mannat

How should the aforegoing items be dealt with in preparing the Liquidation and Distribution Account?.  Are such (religious) liabilities to be deemed
ordinary claims against the estate and paid over in full or as a Wasiyat/bequests and limited to only 1/3rd of the net value of the estate. And to whom should such liabilities be given and so discharge the deceased’s religious obligations. And, forgive my ignorance, but what does “Kaffarah: and “Mannat” mean?