Hajj & Umrah

Going from Taif to Musjid ul Haraam without performing umrah

Q: I am living in Taif for work purposes. I frequently go for Umrah from Taif, however sometimes I go to Musjid ul Haraam to perform salaah such as the Jumuah salaah.

I have recently been told that it is not permissible to go to Musjid ul Haraam just to perform salaah as respect of the Haram demands that we wear ihraam and perform Umrah before entering. Can you please clarify if it is permissible for me to go to Musjid ul Haraam just to perform salaah without performing Umrah?