The Strongest Opinion on the Issue of the Ma'mum Standing in Front of the Imam?

Question : What is the strongest opinion? Khalid says that in cases of dire necessity, it is permissible for the ma'mum to stand in front of the imam, but without dire necessity, the prayer is not valid.

Answer : It is not valid, meaning that the utmost in this matter is that standing in front is obligatory, and an obligatory act is dropped in cases of dire necessity. So, that is fine.