What Suffices for Hajjata al-Islam and What Does Not Suffice? (The following Chapter is best explained by fatwa).

10. A number of our people have narrated from Ahmad ibn Muhammad from ibn Mahbub from ibn Ri’ab from Durays who has said the following: “This is about a man who travels for Hajjahta al-Islam and dies on the way. Abu Ja‘far عليه السلام, has said, ‘If he dies in al-Haram (the sacred area), it is sufficient for Hajjahta al-Islam. However, if he dies outside al-Haram (the sacred area), then his guardians should complete, Qada’ (compensatory for) Hajjahta al-Islam, on his behalf.’”