Muhammad b. Maslama said that when Allah's Messenger ﷺ stood up to observe voluntary prayers he said, “Allah is most great. I have turned my face as a hanif towards Him who created the heavens and the earth, and I am not a polytheist.” And he mentioned the tradition like that of Jabir, except that he said, “l am of the Muslims.” Then he said, “O Allah, Thou art the King. There is no Allah but Thee. Glory be to Thee, and with praise of Thee [do I begin my worship].” Then he would recite [some verses]. Nasa’i transmitted it.