Wa `alaykum As-Salamu wa Rahmatullahi wa Barakatuh

 

In the Name of Allah, the All-Merciful, the Mercy-Giving

 

All praise is due to Allah. Peace and blessings be upon His Messenger Muhammad.

 

Your Umrah is valid. Therefore, you need not worry about the fact you went to Ta’if and should have assumed ihram from Ta’if on your return to Makkah.

 

As a person coming from outside if you do Hajj of Tamattu, you are to consider as a person living in Makkah  –  as far as the remaining rituals of Hajj care concerned.

 

That is why you can follow the example of the Prophet’s wife, Aishah. (You may read the details in another answer mentioned above).

 

The only exception in your case was you went out of Haram. It should not make any difference.

 

There is no evidence in the sources to rule that anyone who goes out of Makkah to Jedda or Madinah after Umra of Tamattu would invalidate their Tamattu and therefore must return with Ihram for Umrah.

 

That is a position held by some scholars; there is no textual evidence to support it; that is why we find other eminent scholars opposing such a view.

 

Therefore, you need not worry over this issue.

 

Almighty Allah knows best.