'Abdullah ibn Mas'ud said, "The Messenger of Allah, may Allah bless him and grant him peace, slept on a straw mat and when he got up he had a mark on his side. We said, "Messenger of Allah, we could make a covering for you?" He said, "What have I to do with this world? I am only in this world like a rider who seeks shade under a tree and then goes on."
Riyad as Saliheen 486 - Sunni Hadith