Hadith record

2. Ali ibn Ibrahim has narrated from his father, from al-Nawfaliy from al-Sakuniy who has said the following: “Abu ‘Abd Allah (a.s.), has said that when you fill soil in the grave of a deceased say, ‘(It is) out of faith in You (O Allah) and an acknowledgement of Your resurrection. This is what Allah and His Messenger have promised us.’ He (the Imam) said that Amir al-Mu’minin (a.s.), has said, ‘I heard the Messenger of Allah say, “Whoever fills soil in the grave of a deceased saying this expression, Allah grants him the reward of one good deed for each particle.’””

Translation: Muhammad Sarwar·Thaqalayn link·The Arabic above is the original.