The Sufficient (Vol 3) · Hadith 759 (#Ḥadīth #2)
Chapter 67 | Preparing Four Corners of the Grave and Sprinkling Water on It
2ـ عِدَّةٌ مِنْ أَصْحَابِنَا عَنْ أَحْمَدَ بْنِ مُحَمَّدِ بْنِ خَالِدٍ عَنْ عُثْمَانَ بْنِ عِيسَى عَنْ سَمَاعَةَ عَنْ أَبِي عَبْدِ الله (عَلَيْهِ الْسَّلام) قَالَ يُسْتَحَبُّ أَنْ يُدْخَلَ مَعَهُ فِي قَبْرِهِ جَرِيدَةٌ رَطْبَةٌ وَيُرْفَعَ قَبْرُهُ مِنَ الأرْضِ قَدْرَ أَرْبَعِ أَصَابِعَ مَضْمُومَةٍ وَيُنْضَحَ عَلَيْهِ الْمَاءُ وَيُخَلَّى عَنْهُ.
2. A number of our people have narrated from Ahmad ibn Muhammad ibn Khalid from ‘Uthman ibn ‘Isa from Sama‘ah who has said the following: “Abu ‘Abd Allah , has said, ‘It is preferable to place two fresh twigs of palm tree with the deceased in the grave, raise the surface of the grave above ground by four inches, sprinkle water on it and then leave it alone.’”
Gradings are classical jarḥ-wa-taʿdīl, name-matched to a rijāl index (not individually re-verified).