Amr bin Wahb al-Thqfy عمرو بن وهب الثقفي · The Book of Purification

"There are two things which I never asked anyone about after I saw the Messenger of Allah (ﷺ). He was with us on a journey and he went away to relieve himself, then he came and performed Wudu', and he wiped over his forehead and two sides of his 'Imamah, and he wiped over his Khuffs." He said: "And (the other issue) the Imam's Salah behind one of his followers. I saw the Messenger of Allah (ﷺ) when he was…