I performed the farewell tawaf once, then returned to Madinah, having already performed the arrival tawaf and the tawaf of Ifadah. What is required of me?

Question:
May Allah reward you with good, and may He do you good. He says: When I went to Makkah after stoning the pillars on the second day of Tashriq to perform the farewell tawaf and return to Madinah, where my place of work is, I had read in a book that the farewell tawaf is only one circuit around the Ka'bah. So I actually performed one or two circuits and returned to Madinah. Knowing that I had performed the arrival tawaf when I first came to Makkah and the tawaf of Ifadah on the first day of Tashriq, what must I do after this time has passed? May Allah reward you with good.

Answer:
If by "one time" he means he performed only one circuit, then his tawaf is invalid; because the tawaf is seven circuits. It begins at the Black Stone and ends there; every circuit begins at the Black Stone and ends at the Black Stone. On this basis, it is obligatory for him to offer a sacrificial animal (fidyah) to be slaughtered in Makkah, because he left off an obligatory part of Hajj. Whoever leaves off an obligatory part must offer a sacrificial animal. So he slaughters a fidyah in Makkah and distributes it to the poor of the Haram, or he appoints someone to slaughter it on his behalf and distribute it. If he is unable to slaughter the fidyah due to poverty, he fasts for ten days. Yes.