Musnad Abu Ya'la al-Mawsili 139:8

Wahb ibn Baqiyyah narrated to us, Khalid informed us, from Sulayman al-Taymi, from Anas, who said: It was mentioned to us that the Messenger of Allah (may Allah bless him and grant him peace) said: "Indeed, among you are people who will worship until they amaze the people and they amaze themselves; they will pass through the religion just as an arrow passes through the game."