The Sufficient (Vol 3) · Hadith 823 (#Ḥadīth #2)
Chapter 79 | The Obligations of the Neighbors toward the People of the Deceased and Mourning Ceremonies
2ـ عَلِيُّ بْنُ إِبْرَاهِيمَ عَنْ أَبِيهِ عَنْ حَمَّادٍ عَنْ حَرِيزٍ عَنْ زُرَارَةَ عَنْ أَبِي جَعْفَرٍ (عَلَيْهِ الْسَّلام) قَالَ يُصْنَعُ لأَهْلِ الْمَيِّتِ مَأْتَمٌ ثَلاَثَةَ أَيَّامٍ مِنْ يَوْمَ مَاتَ.
2. Ali ibn Ibrahim has narrated from his father from Hammad from Hariz from Zurarah who has said the following: “Abu Ja’far , has said, ‘Mourning ceremony is organized for a deceased for three days, beginning from the day of his death.’”
Gradings are classical jarḥ-wa-taʿdīl, name-matched to a rijāl index (not individually re-verified).