Sahih al-Bukhari, Volume 5, Book 59, Hadith 569 (USC-MSA) ⓘ

Narrated Salama bin Al-Akwa`: I fought in seven Ghazwat (i.e. battles) along with the Prophet 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.

حَدَّثَنَا قُتَيْبَةُ بْنُ سَعِيدٍ، حَدَّثَنَا حَاتِمٌ، عَنْ يَزِيدَ بْنِ أَبِي عُبَيْدٍ، قَالَ سَمِعْتُ سَلَمَةَ بْنَ الأَكْوَعِ، يَقُولُ غَزَوْتُ مَعَ النَّبِيِّ صلى الله عليه وسلم سَبْعَ غَزَوَاتٍ، وَخَرَجْتُ فِيمَا يَبْعَثُ مِنَ الْبُعُوثِ تِسْعَ غَزَوَاتٍ، مَرَّةً عَلَيْنَا أَبُو بَكْرٍ، وَمَرَّةً عَلَيْنَا أُسَامَةُ‏.‏

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

وَقَالَ عُمَرُ بْنُ حَفْصِ بْنِ غِيَاثٍ حَدَّثَنَا أَبِي، عَنْ يَزِيدَ بْنِ أَبِي عُبَيْدٍ، قَالَ سَمِعْتُ سَلَمَةَ، يَقُولُ غَزَوْتُ مَعَ النَّبِيِّ صلى الله عليه وسلم سَبْعَ غَزَوَاتٍ، وَخَرَجْتُ فِيمَا يَبْعَثُ مِنَ الْبَعْثِ تِسْعَ غَزَوَاتٍ، عَلَيْنَا مَرَّةً أَبُو بَكْرٍ، وَمَرَّةً أُسَامَةُ‏.‏