The ruling on Tawaful-Wada" for the 'Umrah Pilgrim and the ruling on buying something after Tawaful-Wada"
Question :
...Is Taraful-Wada' obligatory for 'Umrah and is it permissible to buy something from Makkah after Tawaful-Wada, regardless of whether it was for a Hajj or an 'Umrah?
Answer:
Tawaful-Wada' is not obligatory for 'Umrah, but doing it is better. So, if the person (performing 'Umrah) leaves and does not perform Tawaful-Wada' there is no problem with that. However, concerning Hajj, it is obligatory due to the Prophet's statement:
"No one should leave until his last act is at the House (the Ka'bah)."
This was an address to the Hajj pilgrims.
He may buy whatever he needs after the Tawaful-Wada' from all the kinds of items of necessity, even if he buys something for business, as long as the period of time is short and not long. However, if the period of time becomes long, he must repeat the Tawaf. So, if the time is not what is customarily considered long, he does not have to repeat it at all.
Source:
Ash-Shaykh Ibn Baz
Fatawa Islamiyah, Vol. 4 Page 197