´It was narrated from 'Aishah that the Messenger of Allah said:` "It is not permissible for a woman to mourn for anyone who dies for more than three days, except for her husband."
Hadith ReferenceSunan an-Nasa'i / The Book of Divorce / Hadith: 3555
Hadith Gradingالألبانی:صحيح | زبیر علی زئی:صحيح مسلم
Hadith Takhrij«صحیح مسلم/الطلاق 9 (1491)، سنن ابن ماجہ/الطلاق 35 (2085)، (تحفة الأشراف: 16441)، مسند احمد (6/37، 148، 249) (صحیح)»