سنن النسائي

It was narrated from Humaid bin Nafi' that Zainab bint Abi Salamah told him these three Hadiths. Zainab said: "I entered upon Umm Habibah, the wife of the Prophet, when her father Abu Sufyan bin Harb died. Umm Habibah called for some perfume and put some on a young girl, then she put some on her cheeks. Then she said: 'By Allah, I do not have any need for perfume but I heard the Messenger of Allah (ﷺ) say: It is not permissible for any woman who believes in Allah and the Last Day to mourn for anyone who dies for more than three days, except for a husband, (for whom the mourning period is) four months and ten days.'"