One who performed tawaf but did not perform sa'y, then learned of it

Question:
Among the questions we received, Honorable Shaykh Salih, is this: If a person who was required to perform sa'y performed tawaf, then left without performing sa'y, and was later informed that he was required to perform sa'y, does he perform sa'y only, or is he required to repeat the tawaf?

Answer:
He does not repeat the tawaf because he has already performed it, but he must return and perform the sa'y to complete his ritual of Hajj or 'Umrah. He returns and performs the sa'y, even if it is delayed, because sa'y has no specific time limit, meaning no fixed deadline; rather, he performs it whenever it becomes feasible for him. He does not complete his ritual except by doing so. Allah the Exalted said: Therefore, his ritual is not completed except by the sa'y, because it is one of the pillars of Hajj.