The command to fight the people until they say "La ilaha illallah Muhammad Rasul-Allah", and establish Salat, and pay the Zakat, and believe in everything that the prophet (ﷺ) brought. Whoever does that, his life and his wealth are protected except by its right, and his secrets are entrusted to Allah, the most high. Fighting those who withhold Zakat or other than that is one of the duties of Islam and the Iman should be concerned with the Laws of Islam
Abu Burda reported on the authority of his father that Allah's Apostle (ﷺ) said:
No Muslim would die but Allah would admit in his stead a Jew or a Christian in Hell-Fire. 'Umar b. Abd al-'Aziz took an oath: By One besides Whom there is no god but He, thrice that his father had narrated that to him from Allah's Messenger (ﷺ).
Reference: Sahih Muslim 2767 b In-book : Book 50, Hadith 58 USC-MSA web (English) : Book 37, Hadith 6666 (deprecated)
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