Humayd ibn Nafi reported from Sayyidah Zaynab bint Abu Salamah. She spoke to him about these three ahadith.
She said: I visited Umm Habibah (RA) wife of the Prophet (SAW)when her fahter Abu Sufyan ibn Harb died. She called for a perfume which had a yellowness or another substance. She applied it to a girl and then on her own cheeks, saying, “By Allah, I had no need for this except that I had heard Allah’s Messenger (SAW) say, ‘It not lawful for a woman who believes in Allah and the last day to mourn a dead person more than three days except that she mourn her dead husband for four months and ten days.”
[Ahmed 26816, Bukhari 680, Muslim 1486]