The Mufrid only has to perform one Sa'y

Question :

I performed Hajj as a Mufrid (ie, performing Hajj without 'Umrah) and I performed the Tawaf and Sa'y before 'Arafah. Am I obligated to perform Tawaf and Sa'y when coming back (to Makkah) from 'Arafat or with the Tawaf of Al-Ifadhah (Tawaf for coming back to Makkah from 'Arafat)?

Answer:

This person who performed Hajj as a Mufrid, and likewise if he had performed Hajj as a Qarin, combining Hajj and Umrah together (without removing the Ihram between them), then he came to Makkah and made Tawaf and Sa'y and remained in his Ihram because he was a Mufrid or Qarin, and he did not come out of Ihram, then his Sa'y suffices him. He is not obligated to perform another Sa'y. If he makes Tawaf on the day of the 'Eid, this is sufficient for him for the Tawaf of Al-Ifadhah if he did not come out of Ihram until the day of the sacrifice or he had his sacrificial animal with him. In this case he does not come out of Thram until he concludes his acts of Hajj and Umrah both on the day of the sacrifice. The Sa'y that he performed when he first came is sufficient. It makes no difference whether he had a sacrificial animal with him or not, as long as he does not remove his Ihram until after coming back from 'Arafat on the day of the 'Eid. Verily, his first Sa'y suffices him and he does not need to perform a second Sa'y if he combined Hajj and Umrah as a Qarin or if he performed Hajj as a Mufrid. The second Sa'y is only due on the Mutamatti' who assumes Ihram for Umrah and performs Tawaf and Sa'y for this, then he removes the Ihram, then he assumes Ihram again for Hajj. This person must perform Say a second time for Hajj that is not the Sa'y of 'Umrah.

Source:
Ash-Shaykh Ibn Baz
Fatawa Islamiyah, Vol. 4 Pages 103-104