Is it true that the famous Hadith: "I have left among you that which, if you hold fast to it, you will never go astray after me: the Book of Allah and my Sunnah," was narrated in the authentic Hadith collections with the wording "Book of Allah and my Itrah (progeny)," and that Sunni scholars altered "my Itrah" to "my Sunnah"?

Both phrases are authentically established: "My Sunnah (definition)" and "My 'Itrah (progeny)." "My Sunnah" refers to what is authentically reported from the Prophet, peace be upon him, whether it be a saying, an action, or an approval, and this phrase does not diminish the status of the People of the House. As for "My 'Itrah," it refers to the People of the House who follow the prophetic guidance, and the intent is to seek guidance and emulate them.