Is the Hajj of one who stoned the Jamarat on the eleventh day, then hired someone to stone on his behalf on the twelfth day, performed the farewell circumambulation, and then traveled, valid, and is a sacrifice (dam) incumbent upon him?

Their Hajj is valid but incomplete, due to their failure to stay overnight in Mina on the night of the twelfth, and to stone the Jamarat thereafter, and to perform the Farewell Circumambulation (Tawaf al-Wada'). They are sinful and must repent and seek forgiveness. According to the preponderant opinion, each of them must offer three sacrifices (dam): one for omitting the overnight stay, another for omitting the stoning of the Jamarat, and a third for omitting the Farewell Circumambulation.