Is there a special virtue to sending blessings and peace upon the Prophet at his grave?

Question:
May Allah reward you. Is there a difference or a preference for the one who visits the Prophet’s Mosque (peace and blessings be upon him) by specifically sending peace upon him at his grave and the graves of his two companions (may Allah be pleased with them)?

Answer:
Sending blessings upon the Messenger (peace and blessings be upon him) is not tied to a specific place. Send blessings upon him in any place. [The Prophet said:] “Send your blessings upon me, for your blessings reach me wherever you are.” So the Muslim in the east and west of the earth sends blessings upon the Messenger (peace and blessings be upon him), and his peace and blessings reach the Messenger. Allah has appointed those who convey the blessings to the Messenger (peace and blessings be upon him). There is no need to go to his grave in order to send blessings and peace upon him.
As for sending peace upon him, this is prescribed for the one who comes to Madinah. The one who comes to Madinah from a journey, the first thing he should do when he arrives, and it is recommended for him, is to pray two rak'ahs in the Prophet’s Mosque, or the obligatory prayer if its time has entered. Then he goes and sends peace upon the Messenger (peace and blessings be upon him) and sends peace upon his two companions, and then he leaves. This is what is prescribed.