What did Prophet Muhammad (saw) say about how long a woman who believes in Allah and the Last Day should mourn for a dead person, except in the case of her husband?
 Narrated Um 'Atiyya:                     The Prophet said, "It is not lawful for a lady who believes in Allah and the Last Day, to mourn for more than three days for a dead person, except for her husband, in which case she should neither put kohl in her eyes, nor perfume herself, nor wear dyed clothes, except a garment of 'Asb" Um 'Atiyya added: The Prophet said, "She should not use perfume except when she becomes clean from her menses whereupon she can use Qust, and Azfar (two kinds of incense).