He thought that offering Ud-hiyah makes him in no need of slaughtering a Hady

Q 2: My wife and I performed Hajj in 1417 A.H. I authorized my children's uncle to slaughter Ud-hiyah (sacrificial animal offered by non-pilgrims) for the children in Riyadh, thinking that this is sufficient on behalf of me and all my household. However, I heard later that both my wife and I have to offer Hady (sacrificial animal offered by pilgrims) in Makkah. Does the Ud-hiyah that was offered in Riyadh suffice for me and my household or should my wife and I offer Hady? What should we do? May Allah reward you with the best.

A : If both of you were Mutamatti`s (pilgrims performing `Umrah during the months of Hajj, followed by Hajj in the same year with a break in between) or Qarins (pilgrims combining Hajj and `Umrah without a break in between), you should both offer Hady that meets the same conditions for Ud-hiyah in Makkah. The Ud-hiyah is not sufficient as it does not take the place of Hady. However, if you were Mufrads (pilgrims performing Hajj only), you do not have to offer Hady. If you did not offer Hady (Part No. 10; Page No. 401) at its due time in Makkah, you should offer it now in Makkah, either by yourselves or through a trustworthy agent.May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.