What is said in the greeting to the Prophet (peace and blessings be upon him), and to his two companions Abu Bakr and 'Umar, when visiting his grave?

Question:
May Allah reward you, Honorable Shaykh. This questioner says: What is said in the greeting to the Prophet (peace and blessings be upon him) and to his two companions Abu Bakr and 'Umar (may Allah be pleased with them both)?

Answer:
He says: As Ibn 'Umar said, "Peace be upon you, O Messenger of Allah, peace be upon you, O Abu Bakr al-Siddiq, peace be upon you, O 'Umar," and then he departs. Even if he mentions some of their attributes.
With peace, there is no harm. If he said, "I bear witness that you conveyed the message, fulfilled the trust, advised the community, and struggled for Allah with the true struggle, may Allah reward you for your community with the best reward He gives a prophet for his community," there is no harm, because this is among his attributes (peace and blessings be upon him). If he said, "Peace be upon you, O Abu Bakr al-Siddiq, O successor of the Messenger of Allah (peace and blessings be upon him)," there is no harm. If he said, "Peace be upon you, O 'Umar al-Faruq, O successor of the Messenger of Allah (peace and blessings be upon him)," and made du'a' for them, there is no harm. Yes.