One who has committed the grave sin of zina: Is it better for him to repent and conceal it, or to request that the hadd punishment be carried out against him?

Question:
He says: Honorable Shaykh, may Allah grant you success, one who has committed the grave sin of zina, may Allah protect us from it, which is better for him: that he conceal it from himself, or that he confess so that the hadd punishment is carried out against him?

Answer:
No, it is better for him to conceal it from himself and repent to Allah; that is the best for him.