Sayyida Zaynab bint Umm Salamah (may Allah be pleased with her) says: A relative of Sayyida Umm Habibah (may Allah be pleased with her) passed away. She sent for perfume, applied it to her arms, and said: I have done this for a specific reason, and that is because the Messenger of Allah (peace and blessings be upon him) said: It is not lawful for a woman who believes in Allah and the Last Day to mourn for any deceased person for more than three days, except for her husband, for whom the mourning period is four months and ten days.