What is obligatory for the pilgrim and the one performing 'Umrah to achieve tawhid (the oneness of Allah) in their rites?

Question:
How is tawhid (the oneness of Allah) realized in Hajj and 'Umrah?

Answer:
Allah the Exalted said: In it are two matters. The first matter is completion, which is achieved by performing the rites as Allah the Exalted has prescribed them and as His Messenger (peace and blessings be upon him) explained them, by saying: "Take from me your rites." The second matter is sincerity for Allah, so one does not perform Hajj or 'Umrah for the sake of showing off or seeking fame, or performs Hajj and 'Umrah for the sake of worldly greed or the like. Rather, one performs Hajj and 'Umrah sincerely for Allah the Exalted, and avoids shirk (associating partners with Allah) in all of one's deeds, including in one's Hajj and 'Umrah, because if shirk (associating partners with Allah) is mixed with the deed, it invalidates and corrupts it.
Therefore, the deed must be pure for Allah the Exalted, containing no showing off, no seeking of fame, and no greed for any matter of this world. Yes.