How can the direction of the qiblah be indicated to those entering the mosque if the construction of a mihrab or the like has not been prescribed?

The Shaykh : If this wall that we agreed to erect does not achieve the purpose of alerting the person entering the mosque to the direction of the qiblah, then one should adopt whatever means helps to achieve the goal of this wall, since the goal was not fully achieved by it alone. Any means may be adopted, but the original principle is...

The questioner : We still have a genuine fear regarding the means we are adopting.