"I heard Abu Kabshah Al-Anmari saying: 'The Kimam (caps) of the Companions of the Messenger of Allah ﷺ were Buthan (stretched over the head).'"  

سَمِعْتُ أَبَا كَبْشَةَ الأَنْمَارِيَّ يَقُولُ كَانَتْ كِمَامُ أَصْحَابِ رَسُولِ اللَّهِ ﷺ بُطْحًا