I have self acquired property .
I want to sell property to a friend who is unable to pay full amount in short period of time . I wish to help him while keeping my rights secure . He says he will pay the agreed price in installments over a period of 10 years . I have no objection as he is good friend who has helped me many times in past . My children do not like agreement spread over 10 years . They say the agreement of 10 years is illegal .
My questions :
1. Is sale-purchase agreement spread over a period of 10 years illegal when the buyer and seller have no objection ?
2. Suppose I die during 10 years of agreement , how can I assure that my children do not harass my friend after my death ?