Some people believe that if the Imam leads the prayer standing inside the Mihrab, the prayer is not valid, whereas the correct ruling is that the prayer is valid. However, it is Makrooh (disliked) for the Imam to lead the prayer standing inside the Mihrab, but in case of a shortage of space and necessity, there is no harm in leading the prayer standing inside the Mihrab. (Aham Masail / Vol: 4 / Page: 62)