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.
bukhari:4271ʿUmar b. Ḥafṣ b. Ghiyāth from my father > Yazīd b. Abū ʿUbayd > Salamah

I fought seven Ghazwat (i.e. battles) along with the Prophet ﷺ and also fought in nine battles, fought by armies sent by the Prophet ﷺ . Once Abu Bakr was our commander and another time, Usama was (our commander).  

البخاري:٤٢٧١وَقَالَ عُمَرُ بْنُ حَفْصِ بْنِ غِيَاثٍ حَدَّثَنَا أَبِي عَنْ يَزِيدَ بْنِ أَبِي عُبَيْدٍ قَالَ

سَمِعْتُ سَلَمَةَ يَقُولُ غَزَوْتُ مَعَ النَّبِيِّ ﷺ سَبْعَ غَزَوَاتٍ وَخَرَجْتُ فِيمَا يَبْعَثُ مِنَ الْبَعْثِ تِسْعَ غَزَوَاتٍ عَلَيْنَا مَرَّةً أَبُو بَكْرٍ وَمَرَّةً أُسَامَةُ  


See similar narrations below:

Collected by Bukhārī, Muslim
bukhari:4270Qutaybah b. Saʿīd > Ḥātim > Yazīd b. Abū ʿUbayd > Salamah b. al-Akwaʿ

I fought in seven Ghazwat (i.e. battles) along with the Prophet ﷺ and fought in nine battles, fought by armies dispatched by the Prophet. Once Abu Bakr was our commander and at another time, Usama was our commander.  

البخاري:٤٢٧٠حَدَّثَنَا قُتَيْبَةُ بْنُ سَعِيدٍ حَدَّثَنَا حَاتِمٌ عَنْ يَزِيدَ بْنِ أَبِي عُبَيْدٍ قَالَ

سَمِعْتُ سَلَمَةَ بْنَ الأَكْوَعِ يَقُولُ غَزَوْتُ مَعَ النَّبِيِّ ﷺ سَبْعَ غَزَوَاتٍ وَخَرَجْتُ فِيمَا يَبْعَثُ مِنَ الْبُعُوثِ تِسْعَ غَزَوَاتٍ مَرَّةً عَلَيْنَا أَبُو بَكْرٍ وَمَرَّةً عَلَيْنَا أُسَامَةُ  

muslim:1815aMuḥammad b. ʿAbbād > Ḥātim / Ibn Ismāʿīl > Yazīd / Ibn Abū ʿUbayd > Salamah

I joined seven military expeditions led by the Messenger of Allah himself ﷺ, and nine expeditions which he sent out once under Abu Bakr and once under Usama b. Zaid.  

مسلم:١٨١٥aحَدَّثَنَا مُحَمَّدُ بْنُ عَبَّادٍ حَدَّثَنَا حَاتِمٌ يَعْنِي ابْنَ إِسْمَاعِيلَ عَنْ يَزِيدَ وَهُوَ ابْنُ أَبِي عُبَيْدٍ قَالَ

سَمِعْتُ سَلَمَةَ يَقُولُ غَزَوْتُ مَعَ رَسُولِ اللَّهِ ﷺ سَبْعَ غَزَوَاتٍ وَخَرَجْتُ فِيمَا يَبْعَثُ مِنَ الْبُعُوثِ تِسْعَ غَزَوَاتٍ مَرَّةً عَلَيْنَا أَبُو بَكْرٍ وَمَرَّةً عَلَيْنَا أُسَامَةُ بْنُ زَيْدٍ