Safiyya bint Shayba bin 'Uthman · The Book of Funerals

"The Messenger of Allah said: 'Do not pray for death or wish for it. Whoever insists on praying for it let him say: Allahumma ahini ma kanatil-hayatu khairanli wa tawaffani idha kanatil-wafatu khairanli (O Allah, keep me alive so long as life is good for me, and cause me to die when death is good for me.)"'

"A funeral passed by the Messenger of Allah and he said: 'He is relieved and others are relieved of him.' They said: 'What does relieved mean and what does relieved of him mean: He said: "The believing slave is relieved of the hardships and troubles of this world, and the people, the land, the trees and the animals are relieved of the immoral slave."'