1. Legal right can never be waived.
2. So the statement of wife in MCD has no value and right of maintenance for wife or children can not be relinquished by agreement.
3. So if your daughter now takes plea that she did not receive 20l or the money has been finished ,you are liable for her maintenance till the date she gets married.
4. no one has share in retirement benefit during your lifetime.
5. No case of refund can be filed .