Not Sure if Grandparents Performed Hajj

My grandparents both from my father and my mother have died and I do not know whether they had fulfilled their obligation of performing Hajj or not. So is it upon me to entrust someone to perform Hajj on their behalf?

It is legislated for you to entrust someone to perform Hajj on behalf of every single one of them, so long as the one who is to perform Hajj on behalf of every single one of them has already previously performed Hajj for himself and that he is noble and trustworthy.

And with Allah lies all success and may Allah send prayers and salutations upon our Prophet (Peace and blessings be upon him) and his family and his companions.

The Permanent Committee for Islamic Research and Fatawa