Asma' bint 'Umais said "When )a'far was killed, the Messenger of Allah P.B.U.H went to his family and said: The family of )a'far are busy with the matter of their deceased, so prepare food for them.''' (Da'if) (One of the narrators) 'Abdullah said: "That continued to be the Sunnah, until innovations were introduced, then it was abandoned."