Sunan Ibn Majah The Chapters on Divorce Abu Bakr bin Abi Shayba أبو بكر بن أبي شيبة Ali bin Muhammad bin Ishaq al-Tanafasi علي بن محمد بن إسحاق الطنافسي Habib bin Zayd bin Khallad حبيب بن زيد بن خلاد Sahl bin Sa'd bin Malik Shu'bah bin al-Hajjaj شعبة بن الحجاج Umm 'Ammarah Nasaybah Waki' bin al-Jarrah وكيع بن الجراح the Messenger of Allah (ﷺ), said: “It is not permissible for a woman who believes in Allah and the Last Day to mourn for any deceased person for more than three days, except for her husband.” https://parallelquran.com/hadith/sunan-ibn-majah-1820/