Imam’s ‘awrah (part of body) uncovered during 
prayer
Question

                What should one do if one is praying behind the Imam 
and sees part of his body uncovered?
Praise be to Allah.If someone if in a congregational prayer behind the Imam and sees 
the ‘awrah (those parts of the body that a man or a woman must 
cover.) uncovered due to an opening in his clothes or due to his 
clothes being thin and transparent, then if it is possible he should go 
ahead and cover it with something, otherwise he should move and 
come out of prayer and inform the Imam by saying “cover your 
‘awrah” (in Arabic “ghatti il-‘awrah”), or “protect what has been 
uncovered”. He must not stay quiet and continue to pray because it 
is known that the Imam’s prayer (in the said condition) is incorrect 
and following him is incorrect as well.1