6. A distinction has to be drawn between a mode of enforcing recovery on the one hand and effecting actual recovery of the amount of monthly allowance which has fallen in arrears on the other. Sentencing a person to jail is a “mode of enforcement”. It is not a “mode of satisfaction” of the liability. The liability can be satisfied only by making actual payment of the arrears. The whole purpose of sending to jail is to oblige a person liable to pay the monthly allowance who refuses to comply with the order without sufficient cause, to obey the order and to make the payment. The purpose of sending him to jail is not to wipe out the liability which he has refused to discharge. Be it also realised that a person ordered to pay monthly allowance can be sent to jail only if he fails to pay monthly allowance “without sufficient cause” to comply with the order. It would indeed be strange to hold that a person who “without reasonable cause” refuses to comply with the order of the court to maintain his neglected wife or child would be absolved of his liability merely because he prefers to go to jail. A sentence of jail is no substitute for the recovery of the amount of monthly allowance which has fallen in arrears.