The Sufficient (Vol 3) · Hadith 767 (#Ḥadīth #10)
Chapter 67 | Preparing Four Corners of the Grave and Sprinkling Water on It
10ـ أَبَانٌ عَنْ مُحَمَّدِ بْنِ مُسْلِمٍ عَنْ أَبِي جَعْفَرٍ (عَلَيْهِ الْسَّلام) قَالَ يُدْعَى لِلْمَيِّتِ حِينَ يُدْخَلُ حُفْرَتَهُ وَيُرْفَعُ الْقَبْرُ فَوْقَ الأرْضِ أَرْبَعَ أَصَابِعَ.
10. Aban has narrated from Muhammad ibn Muslim who has said the following: “Abu Ja‘far , has said, ‘Prayers are said when a deceased is placed in his grave and the surface of the grave is raised above the ground by four fingers.’”
Gradings are classical jarḥ-wa-taʿdīl, name-matched to a rijāl index (not individually re-verified).