It was narrated that 'Ata' said: "We attended the funeral of Maimunah, the wife of the Prophet, with Ibn 'Abbas in Sarif. Ibn 'Abbas said: 'This is Maimunah; when you lift up her bier, do not rock it nor shake it. The Messenger of Allah had nine wives and he used to give a share of his time to eight of them and not to one.'"
Sunan an-Nasa'i Book 26, Hadith 1