question #3 Sahih al-Bukhari 5335, Book 68, Hadith 80 : What actions did Zainab bint Jahsh take to adhere to the teachings of the Prophet regarding mourning?

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.’”