Maliks Muwatta Book 16, Hadith Number 7.
Section : Shrouding the Dead.
Yahya related to me from Malik from Ibn Shihab from Humayd ibn Abdar-Rahman ibn Awf that Abdullah ibn Amr ibn al-As said, “A dead man is clothed in a shirt and a waist-wrapper and then wrapped in a third, and if he only has one garment he is shrouded in that.”