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 Huraira reported that he heard the Messenger of Allah (ﷺ) saying:
A highly wicked one amongst the Jinn escaped yesternight to interrupt my prayer, but Allah gave me power over him, so I seized him and intended to tie him to one of the pillars of the mosque in order that you, all together or all, might look at him, but I remembered the supplication of my brother Sulaiman:" My Lord, forgive me, give me such a kingdom as will not be possible for anyone after me" (Qur'an, xxxvii. 35).
Reference: Sahih Muslim 541 a In-book : Book 5, Hadith 49 USC-MSA web (English) : Book 4, Hadith 1104 (deprecated)
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