There is a piece of land that the owner left behind when he travelled forty years ago; is it permissible to remediate it and make use of it?

He buys goods when they are available and plentiful, and sells them when the prices rise. Is this hoarding or profiteering?

Is it permissible to seek the help of someone else to review his master’s thesis from a linguistic point of view?

Is it permissible for the business owner to install surveillance cameras without the knowledge of his employees?

Ruling on decisions made by a sick person when he is drifting in and out of consciousness

Ruling on using someone else’s belongings without asking him for permission, when you know that he would agree to that

Selling goods when they are still on the ship or plane; who is liable for them if they are damaged or destroyed?

Profit-sharing with a non-Muslim

He buys all the goods in the market to gain control of the prices

Is stocking up on mobile phone cards regarded as hoarding?