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." (ES)
English reference (ES): Vol. 1, Book 6, Hadith 1610 (ES)
Arabic reference (ES): Book 6, Hadith 1678 (ES)