The Ruling on Making Du'a for the Deceased at the Grave

Question:
He says: Honorable Shaykh, may Allah grant you success, what is the ruling on making du'a for the deceased at the cemetery or at his grave?

Answer:
For the deceased, there is nothing wrong with it; this is required. The Messenger (peace and blessings be upon him) stood at the grave and made du'a for him, and he ordered the Companions to make du'a, saying, "Make du'a and seek forgiveness for your brother." Making du'a for the deceased at his grave is prescribed. And if you pass by the cemeteries, you greet them and make du'a for them. You make du'a for them. Do you make du'a to them? Understand the difference between making du'a to them or making du'a for them, because they are in need of du'a, whereas you, they have nothing for you.