The ruling on whoever performed Ihram and he did not complete his Sa'y
Question :
A man came to perform 'Umrah and he left off four circuits of Sa'y due to forgetfulness or ignorance, so what must he do?
Answer:
He must complete them. So, he performs them so that he may complete his Sa'y, regardless of whether this was during Hajj or 'Umrah. If he traveled to his land, he must return to Makkah and complete the circuits that he left off so that he may finish his 'Umrah. He has the ruling of being in Ihram, which prohibits him from his family (i.e., sex with his wife) until he completes his 'Umrah.
Source:
Ash-Shaykh Ibn Baz
Fatawa Islamiyah, Vol. 4 Page 287