Sahih al-Bukhari Book 68, Hadith 87
The Prophet (ﷺ) 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"
We were forbidden to mourn for more than three days for a dead person, except for a husband, for whom a wife should mourn for four months and ten days (while in the mourning period) we were not allowed to put kohl in our eyes, nor perfume our-selves, nor wear dyed clothes, except a garment of 'Asb (special clothes made in Yemen). But it was permissible for us that when one of us became clean from her menses and took a bath, she could use a piece of a certain kind of incense. And it was forbidden for us to follow funeral processions.
The Prophet (ﷺ) 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).