Is it permissible to sell a plot of land to a bank for one million (the remaining amount) on a Murabaha basis, then for the bank to lease it back to the owner for one million and one hundred thousand via a lease-to-own agreement?

It is not permissible to sell land to the bank for the remaining price, as this falls under the forbidden inah (buy-back) sale. This is a sale of a commodity for a deferred price, then buying it back for less, so that the larger amount remains owed by the buyer. This is forbidden, based on the Prophet's (peace be upon him) saying: "If you engage in inah transactions, hold onto the tails of cattle, become content with cultivation, and abandon jihad, Allah will inflict humiliation upon you, and He will not remove it until you return to your religion." In this case, the ijarah muntahiyah bi al-tamlik (leasing ending in ownership) contract also cannot be applied.