Possible Duplicate:
hat and jacket during davening
I once a read Pesak from HaRav Shelomo Zalman Orbach where he said it was better to miss Tefila BeSibur then Daven without a hat and jacket. I read it in Mishna Berura Dirshu (Siman 90 or so) notes but they didn't say exactly why. Does anyone know why the Gaon Paskened this way?
CYLOR