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
حَدَّثَنَا مُحَمَّدُ بْنُ عَبْدِ اللَّهِ بْنِ نُمَيْرٍ، حَدَّثَنَا عَبْدُ اللَّهِ بْنُ إِدْرِيسَ، عَنْ شُعْبَةَ، عَنْ مُحَمَّدِ بْنِ الْمُنْكَدِرِ، عَنْ جَابِرِ بْنِ عَبْدِ اللَّهِ، قَالَ أَتَيْتُ النَّبِيَّ صلى الله عليه وسلم فَدَعَوْتُ فَقَالَ النَّبِيُّ صلى الله عليه وسلم مَنْ هَذَا " . قُلْتُ أَنَا . قَالَ فَخَرَجَ وَهُوَ يَقُولُ " أَنَا أَنَا " ."
Jabir b. Abdullah reported:
I came to Allah's Apostle (ﷺ) and called him (with a view to seeking permission). whereupon Allah's Apostle (ﷺ) said: Who is it? I said: It is I. Thereupon he (the Holy Prophet) came out saying: It is I. it is I.
Reference: Sahih Muslim 2155 a In-book : Book 38, Hadith 50 USC-MSA web (English) : Book 25, Hadith 5363 (deprecated)
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