The Sufficient (Vol 3) · Hadith 758 (#Ḥadīth #1)
Chapter 67 | Preparing Four Corners of the Grave and Sprinkling Water on It
1ـ مُحَمَّدُ بْنُ يَحْيَى عَنْ أَحْمَدَ بْنِ مُحَمَّدٍ عَنِ الْحَسَنِ بْنِ عَلِيٍّ عَنِ ابْنِ بُكَيْرٍ عَنْ قُدَامَةَ بْنِ زَائِدَةَ قَالَ سَمِعْتُ أَبَا جَعْفَرٍ (عَلَيْهِ الْسَّلام) يَقُولُ إِنَّ رَسُولَ الله (صلّى اللهُ عَلَيْهِ وَآلِه) سَلَّ إِبْرَاهِيمَ ابْنَهُ سَلاًّ وَرَبَّعَ قَبْرَهُ.
1. Muhammad ibn Yahya has narrated from Ahmad ibn Muhammad from al-Hassan ibn Ali from ibn Bukayr from Qudamah ibn Za’idah that Abu Jaf'ar (al-Baqir) said: Rasulullah ﷺ placed his son Ibrahim in a basket-shaped place in the grave and made the surface into a square shape.’”
Gradings are classical jarḥ-wa-taʿdīl, name-matched to a rijāl index (not individually re-verified).