Sahih Muslim Book 004, Hadith Number 2038.
Chapter : The dead body is punished for the lamentation of his family.
Hafsa narrated on the authority of Umm 'Atiyya that she said: When this verse was revealed: "When believing women came to thee giving thee a pledge that they will not associate aught with Allah, and will not disobey thee in good" (lx. 12), she (Umm Atiyya) said: In (this pledge) was also included wailing. I said: Messenger of Allah I except members of such a tribe who helped me (in lamentation) during pre-Islamic days, there is left no alternative for me, but that I should also help them. Upon this the Messenger of Allah (may peace be upon him) said: (Yes) but only in case of the members of such a tribe.