Ruling on saying: "O intercession of Muhammad" after the prayer

Question:
Some people pray and say after the prayer: "O intercession of Muhammad." Is this shirk (associating partners with Allah)?

Answer:
"O intercession of Muhammad" is a supplication to one who does not possess reason. Intercession is a concept; it is not called upon other than Allah. Likewise, if one says, "O Muhammad, intercede for me," this is a supplication to other than Allah and a call for aid to other than Allah. He (peace and blessings be upon him) has passed away, so intercession is not sought from him. Rather, it is sought from the Lord (Glorified and Exalted is He) : "O Allah, let Your Prophet intercede for me. O Allah, let the righteous among Your servants intercede."
As for "O intercession of Muhammad" or "O Muhammad, intercede for me," this is a type of major shirk (associating partners with Allah); because it is a call for aid to other than Allah and a request for intercession from the intercession itself. This is a great abomination and a grave shirk. Similarly: "O aid of Muhammad" or "O aid of al-Badawi" or "O aid of Sayyida Nafisa" or "O aid of al-Jilani" or "O intercession of al-Jilani." Its meaning is that one is supplicating to other than Allah and calling for aid from him. Intercession is sought from the Living, the Present, the One who is able to intercede for you, whereas it is not sought from the dead. It is sought from Allah (Glorified and Exalted is He) .