What is the authenticity of attributing the formula of the Fatihiyya prayer, "the opener of what was closed," to the recognized books of Sunnah, and what is its chain of transmission, if it exists?

The prayer of "the Opener of what was closed" was not narrated from the Prophet, peace and blessings be upon him. It was invented by some innovators who attributed immense virtues to it. The Tijanis claim that their leader, Ahmad al-Tijani, met the Prophet, peace and blessings be upon him, and received this prayer from him, and that it is equivalent to reciting the Quran six thousand times, and that it is from the speech of Allah, and that whoever recites it once will have their sins forgiven, and that al-Tijani will admit his companions to Paradise without reckoning. All of this is falsehood and a disregard for the Book of Allah.