من لا يحضره الفقيه, volume 1, page 185

Hadith.555 - Imam (as) said: "Six things follow a believer after his death: a child who seeks forgiveness for him, a Quran he leaves behind, a tree he plants, a charity of water he provides, a well he digs, and a good tradition that is acted upon after him."

Translation: Bab Ul Qaim Publications — attributed by Thaqalayn·The Arabic above is the original.

Hadith.556 - Imam (as) said: "Whoever from among the Muslims performs a good deed on behalf of a deceased person, their reward will be multiplied, and Allah (swt) will benefit the deceased through it."

Translation: Bab Ul Qaim Publications — attributed by Thaqalayn·The Arabic above is the original.

Hadith.557 - Imam (as) said: "Prayer, fasting, pilgrimage, charity, righteousness, and supplication enter upon the deceased in their grave, and the reward is written for both the one who performs these deeds and the deceased."

Translation: Bab Ul Qaim Publications — attributed by Thaqalayn·The Arabic above is the original.

Hadith.558 - When Dhar ibn Abi Dhar, passed away, Abu Dharr stood by his grave, touched it with his hand, and said: "May Allah (swt) have mercy on you, O’ Dhar. By Allah (swt), you were righteous toward me. You were taken from me while I am content with you. By Allah (swt), I have not felt your loss as a disgrace, nor have I sought from anyone besides Allah (swt) any need. Were it not for the terror of the grave and its trials, I would have been pleased to be in your place. Sorrow for you has preoccupied me from sorrow over your loss. By Allah (swt), I did not cry for you but for myself over you. I wonder what you said and what was said to you. O’ Allah (swt), I have forgiven him what was due to me of rights. Grant him what is due from You, for You are more worthy of generosity and grace."

Translation: Bab Ul Qaim Publications — attributed by Thaqalayn·The Arabic above is the original.