What is the ruling on performing 'Umrah on behalf of the Prophet (peace and blessings be upon him)?

Question:
Is it permissible for one who has performed his 'Umrah to go out and perform another 'Umrah on behalf of the Messenger (peace and blessings be upon him)? Yes. That is, is it permissible for one who has performed 'Umrah for himself to perform another 'Umrah on behalf of the Messenger (peace and blessings be upon him)?

Answer:
The Messenger (peace and blessings be upon him) does not need 'Umrah, for he has a reward like the reward of whoever acts in accordance with his Sunnah. He has the reward of the performers of 'Umrah, the reward of the pilgrims, the reward of the fasting, and the reward of the mujahideen. Every deed that the Ummah performs, he has a share of it (peace and blessings be upon him). There is no need for you to perform 'Umrah on his behalf. Rather, the right of the Messenger (peace and blessings be upon him) upon you is to send prayers and blessings upon him whenever he is mentioned and whenever you hear him mentioned; you send prayers and blessings upon him. Also, the right of the Messenger (peace and blessings be upon him) upon you is to follow him and obey him: that you obey him and follow him, that you act in accordance with his Sunnah, and that you avoid bid'ah (religious innovation) and avoid what he forbade you from. This is the right of the Messenger (peace and blessings be upon him) upon you?