Sahih al-Bukhari Book 68, Hadith 79
Zainab bint Abu Salama told me these three narrations: Zainab said: I went to Um Habiba, the wife of
the Prophet (ﷺ) when her father, Abu- Sufyan bin Herb had died. Um ,Habiba asked for a perfume which
contained yellow scent (Khaluq) or some other scent, and she first perfumed one of the girls with it
and then rubbed her cheeks with it and said, "By Allah, I am not in need of perfume, but I have heard
Allah's Messenger (ﷺ) saying, 'It is not lawful for a lady who believes in Allah and the Last Day to mourn for
a dead person for more than three days unless he is her husband for whom she should mourn for four
months and ten days.'"
Ibn `Umar divorced his wife while she was having her menses. `Umar asked the Prophet (ﷺ) who said, "Order him (your son) to take her back, and then divorced her before her period of the 'Iddah has elapsed." I asked Ibn `Umar, "Will that divorce (during the menses) be counted?" He replied, "If somebody behaves foolishly (will his foolishness be an excuse for his misbehavior)?"
I want to Zainab bint Jahsh when her brother died. She asked for perfume and used some of it and said, "By Allah, I am not in need of perfume, but I have heard Allah's Messenger (ﷺ) saying on the pulpit, 'It is not lawful for a lady who believes in Allah and the last day to mourn for more than three days except for her husband for whom she should mourn for four months and ten days.'"