Contract

Question

Would anyone possibly help me what the following means?I can not find it's concept.

Mutual agreement of parties to rescind or revoke a contract is valid, since the consideration of each party to such an agreement is the giving up of a legal right under the contract

Not only may the parties mutually agree to cancel or rescind, also one party may voluntarily forego certain of his rights under the contract. Thus, acceptance of incomplete or defective performance without objection is a waiver of the right to strict and satisfactory performance.

Answer 1

توافق طرفهای قرارداد بر سر مسئله نحوه(یا دلیل ) باطل کردن قرار داد معتبراست, چرا که به این نحو ( نحوه و یا دلیل باطل کردن قرارداد ) هر طرف از حق قانونی خود صرف نظر کرده است 

I am not 100% sure but hope this helps , or it might give others tips to come up with better translations 

Comments

I can not understand very well the continuous. Could anybody possibly kindly elaborate them? Many thanks