On this issue, Dr. `Abd al-Fattah Idris, a professor of Islamic jurisprudence, said that:

If you are going to stay in Makkah for some time first, then when you intend to make a `Umrah, you have to go to al-Tan`im (Majid `A’ishah) to wear ihram clothes and from there start your `Umrah as the Prophet (peace and blessings be upon him) ordered his wife `A’ishah to do.