Doctor, one of my relatives has a slaughterhouse, and when he slaughters a sheep, he says: In the name of Allah, the Most Gracious, the Most Merciful, then he says to the owner of the sheep: May Allah accept (the sacrifice), then he raises the Takbir like the Takbirs of Eid and asks the owner of the sheep to join him in the Takbir. Are these Takbirs an innovation or a Sunnah, and what is their ruling?