"May my parents be sacrificed on you, O Messenger of God, with your death things have come to an end which could not end thus with the death of any other person. The process of prophethood has come to an end. News of the Unseen have ceased, Revelations from Almighty have ceased. You gave a message of hope to the people. You showed them the right path. You are the savior of humanity. You established a new order. You established equality among the people. You ushered in a revolution. You were a guide when alive; you would be a guide even after death. If you had not ordered patience in hour of grief I would have shed tears of blood from my eyes. The entire world is dark without you. Your passing away is a great loss but we resign ourselves to the will of God. From God you came, and to God you have returned, May your soul rest in peace in proximity to God."


Who said the above.

Ali. Source

Right answer.
I believe the muslims (have to) say this line (in arabic)when anyone dies.

'From God you came and to God you have returned'

Quran
088.025
For to Us will be their return