Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
Qurʾān Bukhārī Muslim Nasāʾī Abū Dāwūd Tirmidhī Ibn Mājah Mālik Aḥmad Dārimī Ḥākim Ibn Ḥibbān Ṭabarānī Nasāʾī's Kubrá Bayhaqī al-Luʾluʾ wa-al-Marjān Ibn Rajab's Fifty Riyāḍ al-Ṣāliḥīn Aḥmad's Zuhd Suyūṭī
bukhari:1456 – [Chain 1] Abū al-Yamān > Shuʿayb > al-Zuhrī [Chain 2] al-Layth > ʿAbd al-Raḥman b. Khālid > Ibn Shihāb > ʿUbaydullāh b. ʿAbdullāh b. ʿUtbah b. Masʿūd > Abū Hurayrah > Qāl Abū Bakr

Abu Bakr said, "By Allah! If they (pay me the Zakat and) withhold even a young (female) goat which they used to pay during the lifetime of Messenger of Allah ﷺ, I will fight with them for it." ʿUmar said, "It was nothing but Allah Who opened Abu Bakr's chest towards the decision to fight, and I came to know that his decision was right."  

البخاري:١٤٥٦ – حَدَّثَنَا أَبُو الْيَمَانِ أَخْبَرَنَا شُعَيْبٌ عَنِ الزُّهْرِيِّ ح وَقَالَ اللَّيْثُ حَدَّثَنِي عَبْدُ الرَّحْمَنِ بْنُ خَالِدٍ عَنِ ابْنِ شِهَابٍ عَنْ عُبَيْدِ اللَّهِ بْنِ عَبْدِ اللَّهِ بْنِ عُتْبَةَ بْنِ مَسْعُودٍ أَنَّ أَبَا هُرَيْرَةَ ؓ قَالَ قَالَ

أَبُو بَكْرٍ ؓ وَاللَّهِ لَوْ مَنَعُونِي عَنَاقًا كَانُوا يُؤَدُّونَهَا إِلَى رَسُولِ اللَّهِ ﷺ لَقَاتَلْتُهُمْ عَلَى مَنْعِهَا قَالَ عُمَرُ ؓ فَمَا هُوَ إِلاَّ أَنْ رَأَيْتُ أَنَّ اللَّهَ شَرَحَ صَدْرَ أَبِي بَكْرٍ ؓ بِالْقِتَالِ فَعَرَفْتُ أَنَّهُ الْحَقُّ  

See similar narrations below:

Collected by Nasāʾī's Kubrá
nasai-kubra:4286 – Aḥmad b. Sulaymān > Muʾammal b. al-Faḍl > al-Walīd b. Muslim > Faḥaddathanī Shuʿayb b. Abū Ḥamzah And Sufyān b. ʿUyaynah Wadhakar Ākhar > al-Zuhrī > Saʿīd b. al-Musayyib > Abū Hurayrah > Faʾajmaʿ Abū Bakr Liqitālihim > ʿUmar Yā Abū Bakr Kayf Tuqātil al-Nās Waqad

"When Abu Bakr mobilized to fight them, 'Umar said: 'O Abu Bakr, how can you fight the people when the Messenger of Allah ﷺ said: "I have been commanded to fight the people until they say La ilaha illallah (there is none worthy or worship except Allah). Whoever says La ilaha illallah, his life and his property are safe from me, except for its right, and his reckoning will be with Allah?'" Abu Bakr, may Allah be pleased with me him, said: 'By Allah, I will surely fight those who separate prayer and Zakah, for Zakah is what is due on wealth. By Allah, if they withhold from me a small she-goat that they used to give to the Messenger of Allah ﷺ I will fight them for withholding it.' ('Umar said) 'By Allah, when I realized that Allah, the Most High, had opened the chest of Abu Bakr to fighting them, then I knew that it was the truth.'" (Using translation from Nasāʾī 3093)  

الكبرى للنسائي:٤٢٨٦ – أَخْبَرَنَا أَحْمَدُ بْنُ سُلَيْمَانَ قَالَ حَدَّثَنَا مُؤَمَّلُ بْنُ الْفَضْلِ قَالَ حَدَّثَنَا الْوَلِيدُ بْنُ مُسْلِمٍ قَالَ فَحَدَّثَنِي شُعَيْبُ بْنُ أَبِي حَمْزَةَ وَسُفْيَانُ بْنُ عُيَيْنَةَ وَذَكَرَ آخَرُ عَنِ الزُّهْرِيِّ عَنْ سَعِيدِ بْنِ الْمُسَيِّبِ عَنْ أَبِي هُرَيْرَةَ قَالَ فَأَجْمَعَ أَبُو بَكْرٍ لِقِتَالِهِمْ فَقَالَ عُمَرُ يَا أَبَا بَكْرٍ كَيْفَ تُقَاتِلُ النَّاسَ وَقَدْ

قَالَ رَسُولُ اللهِ ﷺ أُمِرْتُ أَنْ أُقَاتِلَ النَّاسَ حَتَّى يَقُولُوا لَا إِلَهَ إِلَّا اللهُ فَإِذَا قَالُوهَا عَصَمُوا مِنِّي دِمَاءَهُمْ وَأَمْوَالَهُمْ إِلَّا بِحَقِّهَا قَالَ أَبُو بَكْرٍ لَأُقَاتِلَنَّ مَنْ فَرَّقَ بَيْنَ الصَّلَاةِ وَالزَّكَاةِ وَاللهِ لَوْ مَنَعُونِي عَنَاقًا كَانُوا يُؤَدُّونَهَا إِلَى رَسُولِ اللهِ ﷺ لَقَاتَلْتُهُمْ عَلَى مَنْعِهَا قَالَ عُمَرُ فَوَاللهِ مَا هُوَ إِلَّا أَنْ رَأَيْتُ أَنَّ اللهَ قَدْ شَرَحَ صَدْرَ أَبِي بَكْرٍ بِقِتَالِهِمْ فَعَرَفْتُ أَنَّهُ الْحَقُّ  

nasai-kubra:3423 – Aḥmad b. Sulaymān > Muʾammal b. al-Faḍl > al-Walīd > Faḥaddathanī Shuʿayb b. Abū Ḥamzah And Sufyān b. ʿUyaynah Wadhakar Ākhar > al-Zuhrī > Saʿīd b. al-Musayyib > Abū Hurayrah > Faʾajmaʿ Abū Bakr Liqitālihim > ʿUmar Yā Abū Bakr Kayf Tuqātil al-Nās Waqad

"When Abu Bakr mobilized to fight them, 'Umar said: 'O Abu Bakr, how can you fight the people when the Messenger of Allah ﷺ said: "I have been commanded to fight the people until they say La ilaha illallah (there is none worthy or worship except Allah). Whoever says La ilaha illallah, his life and his property are safe from me, except for its right, and his reckoning will be with Allah?'" Abu Bakr, may Allah be pleased with me him, said: 'By Allah, I will surely fight those who separate prayer and Zakah, for Zakah is what is due on wealth. By Allah, if they withhold from me a small she-goat that they used to give to the Messenger of Allah ﷺ I will fight them for withholding it.' ('Umar said) 'By Allah, when I realized that Allah, the Most High, had opened the chest of Abu Bakr to fighting them, then I knew that it was the truth.'" (Using translation from Nasāʾī 3093)  

الكبرى للنسائي:٣٤٢٣ – أَخْبَرَنَا أَحْمَدُ بْنُ سُلَيْمَانَ قَالَ حَدَّثَنَا مُؤَمَّلُ بْنُ الْفَضْلِ قَالَ حَدَّثَنَا الْوَلِيدُ قَالَ فَحَدَّثَنِي شُعَيْبُ بْنُ أَبِي حَمْزَةَ وَسُفْيَانُ بْنُ عُيَيْنَةَ وَذَكَرَ آخَرَ عَنِ الزُّهْرِيِّ عَنْ سَعِيدِ بْنِ الْمُسَيِّبِ عَنْ أَبِي هُرَيْرَةَ قَالَ فَأَجْمَعَ أَبُو بَكْرٍ لِقِتَالِهِمْ فَقَالَ عُمَرُ يَا أَبَا بَكْرٍ كَيْفَ تُقَاتِلُ النَّاسَ وَقَدْ

قَالَ رَسُولُ اللهِ ﷺ «أُمِرْتُ أَنْ أُقَاتِلَ النَّاسَ حَتَّى يَقُولُوا لَا إِلَهَ إِلَّا اللهُ فَإِذَا قَالُوهَا عَصَمُوا مِنِّي دِمَاءَهُمْ وَأَمْوَالَهُمْ إِلَّا بِحَقِّهَا»؟ قَالَ أَبُو بَكْرٍ لَأُقَاتِلَنَّ مَنْ فَرَّقَ بَيْنَ الصَّلَاةِ وَالزَّكَاةِ وَاللهِ لَو مَنَعُونِي عَنَاقًا كَانُوا يُؤَدُّونَهَا إِلَى رَسُولِ اللهِ ﷺ لَقَاتَلْتُهُمْ عَلَى مَنْعِهَا قَالَ عُمَرُ فَوَاللهِ مَا هُوَ إِلَّا أَنْ رَأَيْتُ أَنَّ اللهَ قَدْ شَرَحَ صَدْرَ أَبِي بَكْرٍ لِقِتَالِهِمْ فَعَرَفْتُ أَنَّهُ الْحَقُّ