How can stolen money be returned to its owners, taking into account the difference in currency value between the time of the theft and the time of restitution, especially given that one thousand Syrian Liras, which used to buy one gram of gold in the past, now buys less than a quarter of a gram?

The preponderant opinion is that the value of stolen money must be returned if the currency's value has significantly changed, because the usurper and the thief are aggressors and bear full responsibility for the damage resulting from their aggression. So, if a person stole one thousand liras, and at that time it was equal to one gram of gold, and now a gram is worth five thousand liras, then he must return five thousand liras.