Is the second tenant obligated to pay the security deposit on behalf of the first tenant if their agreement was verbal and then the second tenant backed out?

"Mutual consent achieved through verbal agreement is sufficient for a lease contract, and it is a stronger indication of consent than anything else. The person who rented from your friend must remain committed to what was agreed upon between them, and it is not permissible for either of them to retract except with mutual consent. This is provided that the verbal agreement was a binding formula and not merely a promise. The collateral cannot be retrieved before its due date, and there is no loss for your friend in this, as he has the right to receive the full rent from the second tenant or to settle with him for something else."