Русско-англо-русский юридический словарь

In law, unjust enrichment is where one person is unjustly or by chance enriched at the expense of another, and an obligation to make restitution arises, regardless of liability for wrongdoing. A common example is when a party contracts to provide a service, but the contract is terminated prematurely due to a breach, and the contractor unjustly receives no compensation for partial services rendered.

The concept of unjust enrichment is based upon the Roman legal maxim "no one should be benefited at another's expense" (nemo locupletari potest aliena iactura or nemo locupletari debet cum alien iactura). (Wikipedia)

You certainly do not have to agree to change the completion date to suit your buyers, but if you do, it is very important you tell your solicitor so he can then vary the contract formally.

Ideally, your solicitor should prepare a supplemental agreement changing the completion date and your buyers should pay your solicitor's costs for drafting it. Both you and the buyers will need to sign the supplemental agreement.

ACCRUED DIVIDEND An accounting term referring to the balance sheet item that accounts for dividends that have been declared but not yet paid to shareholders. Accrued dividends are booked as a liability from the declaration date and remain as such until the dividend payment date.

Accrued dividends should not be confused with accumulated dividends, which refer to dividends due to holders of cumulative preferred stock. (Investopedia)

Prenuptial agreements should be legally binding in divorce settlements, but only after the needs of the separating couple and any children have been taken into account, the Law Commission has recommended. (The Guardian)