Allah’s Messenger said (Allah bless him and give him peace): “You should acquire white clothes, so that your living ones may wear them, and you can shroud your deceased in them, for they are among the best of your clothes.”
“I saw the Prophet (Allah bless him and give him peace) wearing the tatters of two sheets which had been dyed with saffron, but had lost their color....” (This tradition is part of a longer story.)
“Allah’s Messenger said (Allah bless him and give him peace): 'Wear white, for it is most pure and pleasant, and you must shroud your deceased therein'.”