A man broke his state of purity during tawaf and did not perform wudu, then completed the rites of 'Umrah. Is his 'Umrah valid?

Question:
He says: Honorable Shaykh, may Allah grant you success. I was performing tawaf during my 'Umrah, and it was my first 'Umrah. While I was in my tawaf, my state of purity was broken. I knew that my tawaf in this state was not valid, but I was shy of the young men who were with me, and I was also afraid of losing them, since I am fifteen years old. Is my 'Umrah valid, and what is required of me?

Answer:
No, it is not valid, O 'Umrah. You must put on the clothes of ihram again, return to Makkah, and perform the 'Umrah, because you are still in the state of ihram. So put on the clothes of ihram, return immediately, and perform the 'Umrah. Yes.