Thawban bin Bujdud · The Book on Jana''iz (Funerals)

The Messenger of Allah said: "The believer is not afflicted by the prick of a thorn or what is worse (or greater) than that, except that by it Allah raises him in rank and removes sin from him."

The Messenger of Allah said: "Nothing afflicts the believer, whether fatigue, grief, disease - even a worry that concerns him - except that by it, Allah removes something from his bad deeds."

"The Messenger of Allah would walk in front of the funeral, as did Abu Bakr, Umar and Uthman."