The problem with using investment money for personal expenses

When I borrow an item from someone and ask them to "please do me this kind favor" how does that change the nature of the agreement?

The prohibition to remove a mezuza when you move out of a rental home

Who's responsible for affixing the mezuza in a rented home?

The prohibition to cut down fruit-bearing trees, and the scenarios in which it is permitted

Paying for someone else's bus fare using a bus pass- do you pay back full bus fare or the discounted price?

Situations when we don't let a person who denies a monetary claim to swear to that effect to stop him from lying

A Rav or Poseik is like a servant of the community to answer sheelot and guide them

When one borrows a pen at the bank to sign a document and the pen gets lost!

The deep and spiritual idea behind why hiring the owner with the borrowed item creates an exemption of liability