Inni Wajjhatu Wajhiya Lillazi Fataras Samawati Wal Ardha Hanifaun Wa Maa Ana Minal Mushrikeen.

Translation: "I have made myself attentive towards Him who has created the earth & sky & I surrendered to Him. I am not one of those who associate something with Him."

Question: This is done in Hanafi school but I want to know if there's an authentic Hadith.

According to this article "What Is Namaz" it is said before the Niyyah. I thought the order was Niyyah, Takbeer, opening du'a (there's a few).