It wasnarrated that 'Abdullah bin Ja'far said:
"When news of thedeath of Ja'far was brought, the Messenger of Allah (ﷺ) said:'Prepare food for the family of Ja'far, for there has come tothemthat which is keeping them busy or something which is keepingthembusy." (RU)
English reference (RU): Vol. 1, Book 6, Hadith 1610 (RU)
Arabic reference (RU): Book 6, Hadith 1678 (RU)