Question: Does the Prophet (peace be upon him) hear every call and supplication made at his grave? Does he hear us when we invoke blessings on him there, as it is narrated in the Hadeeth, “Whoever invokes Allaah’s blessings on me at my grave, I hear him…”? Is this Saheeh (authentic), Da‘eef (weak) or Mawdoo‘ (fabricated) Hadeeth?
Answer: Basically, the dead do not hear the calls or supplications of the living people, as Allaah (Exalted be He) says (what means): …but you cannot make hear those who are in graves. Nothing in the Qur’aan… read more here.