He forgot Sa’ee’

Dear Brothers & Sisters,
As-Salaamu-Alaikum wa Rahmatullahi wa Barakatuh. (May Allah's Peace, Mercy and Blessings be upon all of you)
One of our brothers/sisters has asked this question:
I did my obligatory Hajj, and I did it as Tamattu’, so I did ‘Umrah then I exited ihraam. On the eighth day (of Dhu’l-Hijjah) I entered ihraam and did all the pillars of Hajj, but I inadvertently forget Sa’ee. What do I have to do? 
Please advise me, may Allaah reward you with good. Is my Hajj valid or not?
(There may be some grammatical and spelling errors in the above statement. The forum does not change anything from questions, comments and statements received from our readers for circulation in confidentiality.)
Check below answers in case you are looking for other related questions:
Doing Sa’ee without wudoo’
Delaying stoning the Jamaraat during the days of Tashreeq for a necessary reason

Answer:
Praise be to Allaah.

You have to go back to Makkah and do Sa’ee for Hajj, because the one who does tamattu’ must do two Sa’ees, one for ‘Umrah and one for Hajj. 

And Allaah is the Source of strength. May Allaah send blessings and peace upon our Prophet Muhammad. 

Whatever written of Truth and benefit is only due to Allah's Assistance and Guidance, and whatever of error is of me. Allah Alone Knows Best and He is the Only Source of Strength.
Your brother and well wisher in Islam

Related Answers:
She did tawaaf in a state of minor impurity; does she have to do anything?
She does Hajj as other people do, and she is not aware of the three types of Hajj
He did saa’i for ‘Umrah before tawaaf
Doing Sa’ee without wudoo’
Delaying stoning the Jamaraat during the days of Tashreeq for a necessary reason

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