What is the ruling on borrowing from Barwa Bank in Qatar through taysir (facilitation), where the bank finances my purchase of shares via "Dalala" Company, which operates on the stock exchange, and the company contacts me after the purchase to ask if I want to sell the shares, then sells them and deposits the money into my account, bearing in mind that the process is quick and the aim is to obtain money?

If the bank authorizes the company to buy shares and sell them to you after the bank has acquired ownership of them, there is no objection to that, provided the shares are permissible. As for your intention to sell them and benefit from their price, there is no objection to it according to the preponderant opinion, because "whoever needs cash, and buys what is worth one hundred for more in order to expand with its price, there is no harm in that, and it is called the issue of Tawarruq."