فَإِذَا أَرَادُوا غُسْلَهُ وَضَعُوهُ عَلَى سَرِيرٍ
Translation: When preparing to wash the deceased, place the body on a bier or washing platform.
Sarir means a bier or platform suitable for supporting the body during washing. It allows the washer to clean the body while maintaining dignity and covering.