Al-Kāfi, vol. 4, no. 2188

7. Ali ibn Muhammad in a marfu‘ manners, has narrated the following: “He (the Imam) (a.s.), has said, ‘The benefit of the clay from the grave of al-Husayn (a.s.), is complete when thereupon Chapter 97 of the Holy Quran is read.” “It is narrated that when you take the clay say, ‘I begin this task in the name of Allah. O Allah, I appeal before You through this clean soil, this marvelous location, through the rights of the executor of the will whom You have concealed here. I appeal before You through the rights of his grandfather, his father, his mother and his brother. (I appeal before You) through the angels who surround it, the angels who are assigned to the grave of the one who possesses Your authority, who wait to support him, grant salawat (favors and compensation) to all of them. I appeal before You to place cure in it for me for all illnesses. Make it a protection against all frightening matters and strength against all weakness. Increase my sustenance and grant me good health thereby.’”