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
وَحَدَّثَنِي سَلَمَةُ بْنُ شَبِيبٍ، حَدَّثَنَا الْحَسَنُ بْنُ أَعْيَنَ، حَدَّثَنَا مَعْقِلٌ، عَنْ زَيْدِ بْنِ أَبِي، أُنَيْسَةَ عَنْ يَحْيَى بْنِ حُصَيْنٍ، عَنْ جَدَّتِهِ أُمِّ الْحُصَيْنِ، قَالَ سَمِعْتُهَا تَقُولُ، حَجَجْتُ مَعَ رَسُولِ اللَّهِ صلى الله عليه وسلم حَجَّةَ الْوَدَاعِ - قَالَتْ - فَقَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم قَوْلاً كَثِيرًا ثُمَّ سَمِعْتُهُ يَقُولُ إِنْ أُمِّرَ عَلَيْكُمْ عَبْدٌ مُجَدَّعٌ - حَسِبْتُهَا قَالَتْ - أَسْوَدُ يَقُودُكُمْ بِكِتَابِ اللَّهِ فَاسْمَعُوا لَهُ وَأَطِيعُوا "
It has been narrated on the authority of Yahya b. Husain who learnt the tradition from his grandmother. Umm Husain. He said':
I heard her say: I performed Hajjat-ul-Wada' in the company of the Messenger of Allah (ﷺ). He said a lot of things (on this occasion). Then I heard him say: If a maimed slave is appointed a commander over you the narrator says: I think she said:" a black stave" who leads you according to the Book of Allah, then listen to him and obey him.
Reference: Sahih Muslim 1838 e In-book : Book 33, Hadith 60 USC-MSA web (English) : Book 20, Hadith 4532 (deprecated)
Help us gift a modern, ad-free Islamic application for the Muslim Ummah. Your donation will be recorded as Sadaqah Jariyah in your book of deeds, In Sha Allah.