Maaseh Rav Siman 15
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מברך ולובש ומכסה ראשו בטלית וא"צ להתעטף כעטיפת ישמאלים (עי' בשו"ע שלו סי' ח ס"ק ד):
Sefaria Community Translation
He blesses, and wears, and covers his head with the tallit, but he does not need to wrap himself as the Ishmaelites wrap. (See Biurei HaGra Orach Chaim 8:4)