Is it obligatory on pilgrims to perform `Eed-ul-Adha (the Festival of the Sacrifice) Prayer?

Question 21: some people take money (between 3,000 and 4,000 Saudi Riyals) to perform Hajj on behalf of another person, either because of illness or death of the person on whose behalf the Hajj is to be performed. The family of the person for whom a proxy Hajj is requested pays a sum of money to someone else to discharge this obligation on the part of their relative.The person performing the Hajj spends the usual sum on the Hajj expenses, such as buying the Hady (sacrificial animal offered by pilgrims) and other expenses, and takes the rest for themselves to pay their personal expenses, such as to buy provisions and suchlike. Is this correct? Is it permissible for a woman to perform such a Hajj? Also, should pilgrims offer Salaat-ul-‘Eed-ul-Adha (the Prayer for the Festival of the Sacrifice)?

Answer: It is permissible for someone to give another person a sum of money to perform Hajj on their behalf, either because they are unable to perform Hajj for themselves or for a deceased person, if the deputized person has already performed Hajj for themselves… read more here.