If one has lent money to another person, how the fact of making a bargain is proved and how in future, in case of refusal to return the sum, how the sum can be reclaimed.
How the fact of lending money to another person may be proved?

If one has lent money to another person, how the fact of making a bargain is proved and how in future, in case of refusal to return the sum, how the sum can be reclaimed.