Yahya related to me from Malik from Hisham ibn Urwa that his
father said, "Allah has completed the hajj of anyone who does the
tawaf al-ifada. It is fitting that tawaf of the House be the last of
his contract, as long as nothing prevents him, and if something
prevents him, or an obstacle arises, then Allah has completed his
hajj."
Malik said, "I do not think that a man who does not
know that the last of his contract is tawaf of the House until he has
left owes anything, unless he is nearby and can return, do tawaf, and
then leave having done the tawaf al-ifada."
Muwatta Malik Book 20, Hadith 126