The ruling on the tawaf of one who doubts the invalidation of his wudu'

Question:
May Allah reward you with good. This is Abu Muhammad. He says: Peace be upon you, and Allah's mercy and blessings. By the praise of Allah, I performed Hajj last year and delayed the tawaf al-ifadah along with the tawaf al-wada'. During the tawaf, I doubted that my wudu' had been invalidated, but I completed the tawaf and returned to Jeddah. The doubt has still been troubling me until now. Am I required to repeat the tawaf?

Answer:
If you entered the tawaf while you were certain of your wudu', and then you had a doubt about the invalidation of the wudu', this has no effect; because certainty is not removed by doubt. Your tawaf is valid, if Allah wills, and let there be nothing in your heart; because you are certain of purity, and you are in doubt about the state of impurity, and doubt does not affect certainty.