The wisdom behind the prescription of collateral (rahn) for loans

Is it permissible for the mother to take some of the wealth of her children who are in her custody?

What is the ruling on dealing in crypto currency and benefitting from market analysis that is leaked to us?

Is trading in crypto currency by using a robot valid?

What is the ruling on accepting change in a different currency when buying something?

Is it permissible to pay off someone else’s loan in return for a product?

Is the person who was entrusted with something liable if he leaves it in the airport because of excess weight?

Is it permissible to deduct something from an employee’s salary towards paying off a debt that he owes?

He adds the tip to the customer’s bill when he pays electronically, without the customer’s knowledge and without him realising that

Ruling on posting videos on YouTube with ads that appear and one has no control over their content