Musannaf Ibn Abi Shaybah

Hazrat Zadhan narrates that when Hazrat Ali (may Allah be pleased with him, may Allah honor his face) would enter a graveyard, he would recite this supplication: Peace be upon you, O believers and Muslims of this place. You have preceded us, and we shall follow you and join you. Indeed, we all belong to Allah, and to Him we shall return.

Hazrat Jundub Al-Azdi narrates that I went towards Hira with Hazrat Salman. When we reached the graveyard, he turned to his right side and recited a supplication: Peace be upon you, O believing men and women of this place! You have gone ahead, we will come later, and we will come following in your footsteps.

Hazrat Mujahid says that they (the Companions) used to greet the graves.

Muhammad says that there is no harm if a person comes to a grave and greets it with peace.

Hazrat Musa bin Uqbah says that I saw Hazrat Salam bin Abdullah, whether it was day or night, whenever he passed by any grave, he would greet it with salam, and we were traveling with him. He would say: "As-salamu alaikum." I asked him about this, and he told me that his father used to do the same.

Hazrat Sulaiman bin Buraidah narrates from his father that the Noble Prophet (peace and blessings be upon him) taught the companions that when they visit the graveyard, they should say: Peace be upon you, O believers and Muslims of this place! If Allah wills, we shall join you. You have gone ahead, and we shall come after. We ask Allah for well-being for ourselves and for you.

Hazrat Amir bin Sa’d narrates from his father that when he returned from Di’ah (village), he passed by the graves of the martyrs and said: "Peace be upon you, and indeed we will surely join you." Then he said to his companions: "Why did you not greet the martyrs so that they would respond to you?"

Hazrat Abdullah bin Sa’d al-Jari narrates that Hazrat Abu Hurairah (may Allah be pleased with him) said to me: O Abdullah! When you pass by a grave that you recognize, say: "As-salamu ‘alaykum, O inhabitants of the graves." And when you pass by a grave that you do not recognize, say: "As-salamu ‘ala al-muslimeen."

Hazrat Abu Muwayhibah, who was the servant of the Messenger of Allah (peace and blessings be upon him), narrates that the Noble Prophet (peace and blessings be upon him) was commanded to go to Jannat al-Baqi‘ and offer prayer over the dead or send peace upon them.