question #1 Sahih al-Bukhari 391, Book 8, Hadith 43 : What are the criteria for someone to be considered a Muslim according to the teachings of the Prophet Muhammad (ﷺ)?

Allah’s Messenger (ﷺ) said, “Whoever prays like us and faces our Qibla and eats our slaughtered animals is a
Muslim and is under Allah’s and His Apostle’s protection. So do not betray Allah by betraying those
who are in His protection.”