Al-Kāfi

Hadith 763
burial
6ـ عَلِيٌّ عَنْ أَبِيهِ عَنِ ابْنِ أَبِي عُمَيْرٍ عَنْ بَعْضِ أَصْحَابِهِ عَنْ أَبِي عَبْدِ الله (عَلَيْهِ الْسَّلام) فِي رَشِّ الْمَاءِ عَلَى الْقَبْرِ قَالَ يَتَجَافَى عَنْهُ الْعَذَابُ مَا دَامَ النَّدَى فِي التُّرَابِ.
6. Ali ibn Ibrahim has narrated from his father from Ibn Abi ‘Umayr from certain persons of his people who has said the following: “About spraying water on the grave abu ‘Abd Allah (a.s.), has said, ‘Suffering is withdrawn from it as long as the moisture exists.’”
Source: Shaykh Muḥammad b. Yaʿqūb al-Kulaynī