It was narrated from Zainab bint Abi Salamah, from her mother, that a woman came to the Prophet and asked him about her daughter whose husband had died and she was ill. He said:
"One of you used to mourn for a year, then throw a piece of dung when a year had passed. Rather it (the mourning period) is four months and ten days."
Reference: Sunan an-Nasa'i 3539 In-book : Book 27, Hadith 153 English translation : Vol. 4, Book 27, Hadith 3569
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